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Silur / Silurian

Alter: 416 +/- 2,8 - 443,7 +/- 1,5 Mio. Jahre

Das Silur ist eine erdgeschichtliche Periode des Paläozoikum. Es umfasst den Zeitraum von vor ca. 443 Mio. Jahren bis vor ca. 416 Mio. Jahren. Nach unten wird das Silur durch das Ordovizium, nach oben durch das Devon begrenzt. Früher wurden auch die Bezeichnungen Gotland oder Gotlandium für die Zeitperiode des Silur verwendet.

Nach der internationalen Gliederung der IUGS ist das Silur in die vier Epochen Pridoli, Ludlow, Wenlock und Llandovery unterteilt. Für eine genaue zeitliche Einordnung und die Unterteilung der Epochen in Altersstufen siehe die Geologische Zeittafel.

Namensgebung

Die Bezeichnung Silur wurde nach Forschungen in Wales 1835 erstmals von Roderick Murchison verwendet. Namensgebend ist der keltische Volksstamm der Siluren, die in Südwales gelebt hatten. Damit folgte Murchison dem Beispiel von Adam Sedgwick, der die älteren Schichten im gemeinsam untersuchten Gebiet nach Cambria, dem alten Namen von Wales, Kambrium genannt hatte.

Paläogeographie

Im Silur setzte sich die Drift des Superkontinentes Gondwana in hohe südliche Breiten fort. Prägend für das Silur ist aber die beginnende Kollision der Kontinentalschollen (Kraton) Laurentia und Baltika und damit die Entstehung des zweiten Superkontinents Laurussia (auch Euramerika oder Old Red Kontinent). Die Kollision war Ursache für die Kaledonische Orogenese, der zweiten Phase der Akadischen Gebirgsbildung. Sie führte zur Auffaltung von Gebirgen in weiten Teilen Nord- und Westeuropas (Norwegen, Schweden, Schottland), sowie in Nordamerika und Grönland.

Klima

Während des Silur war die Vereisung der südlichen Landmassen weniger stark als zur Zeit des Ordovizium. Aufgrund des warmen Treibhausklimas führte die Abschmelzung der Eismassen zu einem starken Anstieg des Meeresspiegels, verbunden mit der Bidlung von tropischen Flachmeeren auf den überfluteten Kontinenten. In diesen warmen Flachmeeren bildeten sich umfangreiche Riffe. Zum Ende des Silur ging sank der Meeresspiegel wieder.

Flora

In der Pflanzenwelt erschienen die ersten Gefäßpflanzen (Cooksonia und Baragwanathia) und erste primitive Bärlappgewächse. Wahrscheinlich ist auch das Auftreten der ersten Pilze.

Fauna

Auf den Kontinenten existierte zur Zeit des Silur noch keine Fauna. Dagegen waren die tropische Flachmeere reich an Brachiopoden, Bryozoen, Mollusken und Trilobiten. Erste Knochenfische (Osteichthyes), vertreten durch die Stachelhaie (Acanthodii) traten auf. Ebenso lebten in den Meeren große, bis zu 3m lange Seeskorpione (Eurypterus). Siehe auch die Übersicht der Lebewesen im Silur.

Die Basis des Silur ist durch das erste große Massenaussterben der Erdgeschichte gekennzeichnet. Infolgedessen starben ca. 60% der maritimen Lebensformen aus.


Lebewesen die in der Erdgeschichte im Silur gelebt haben.

Abacocrinus

Eushantungoceras

Paralogania ludlowiensis

Abacocrinus latus

Eusphairica

Paralogania martinssoni

Abderospira

Eusphairica distubula

Paralogania tarranti

Abdounia

Euspira glaucinoides

Paramachaerodus

Abdounia beaugei

Euspira lewisii

Paramelocrinus

Abdounia minutissima

Euspira marylandica

Parametaria (Dominitaria) islahispaniolae

Abelia

Euspira muriciformis

Paramphipora

Aberia

Euspira nuciformis

Paramplexoides

Ablabesmyia

Euspira pallida

Paramys

Abra (Abra) lioica

Euspira perforata

Paramys copei

Abra (Abra) prismatica

Euspira punjabensis

Paramys delicatior

Abra suessoniensis

Euspirocrinus

Paranourosorex

Abyssocrinus

Euspirocrinus gagnoni

Paranourosorex inexspectatus

Abyssocypris

Euspirocrinus hintsae

Paraocalina

Acacocrinus

Euspirocrinus spiralis

Paraocalina multilobata

Acaenoplax

Euspirocrommium

Paraorthograptus

Acaenoplax hayae

Eusyringium

Paraorthograptus pacificus

Acanthina triangularis

Eutamias ertemtensis

Paraorthograptus uniformis

Acanthocardia

Eutatus seguini

Parapapio

Acanthoceramoporella

Eutaxocrinus

Parapapio lothagamensis

Acanthoclema

Eutaxocrinus maccoyanus

Paraparchites

Acanthocrania

Euthecodon brumpti

Parapelomys

Acanthocybium

Euthecodon nitriae

Parapholas

Acanthocyclus

Euthemon

Paraphragmites

Acanthocyclus porpitoides

Euthria

Paraphtonia

Acanthocythereis

Euthriofusus malcomsoni

Parapisocrinus

Acanthogalathea

Eutrephoceras (Simplicioceras) centrale

Parapisocrinus quinquelobus

Acanthogalathea squamosa

Eutrephoceras charpentieri

Paraplacosauriops

Acanthograptus

Eutrephoceras umbilicare

Paraplacosauriops quercyi

Acanthohalysites

Eutrichiurides winkleri

Paraplegmatograptus

Acanthopyge (Lobopyge) hirsuta

Euvola codercola

Paraplegmatograptus uniformis

Acanthopyge (Lobopyge) parapleura

Euzonosoma

Parapodemus

Acanthopyge (Lobopyge) pristina

Evalea

Parapolytremacis

Acanthoscapha

Evenkiella

Parapolytremacis bellardii

Acanthotrophon

Exaesiodiscus

Parapontoporia

Acanthuroides

Exallaspis

Paraproetus

Acanthuroides massalongoi

Exallaspis bruntoni

Paraproetus brevifrons

Acar

Exallaspis maccrackeni

Pararaphistoma

Acar domingensis

Exechestoma

Pararaphistoma qualteriata

Acar lamellosa

Exidmonea

Pararotalia

Acaretyrricula

Exochella

Parasauromalus

Acaretyrricula tenuiguttae

Exochognathus

Parasauromalus olseni

Acarinina

Exochognathus brassfieldensis

Paraschmidtella

Acaste

Exochognathus expansus

Parascombrops mutinensis

Acaste downingiae

Exostinus

Paraseraphs

Acastella

Expressophyllum

Paraseraphs erraticus

Acastocephala

Exputens

Parasimplastrea

Acastocephala macrops

Exputens alexi

Parasimplastrea simplicitexta

Acdalina

Faberoceras subarctuatum

Parasorex depereti

Acer

Fabularia

Parasorex ibericus

Acerina

Fagus subferruginea

Parasorites

Acernaspis

Failleana

Parasphaeronites

Acernaspis (Eskaspis) sufferta

Failleana magnifica

Parasphaerorthoceras

Acernaspis (Eskaspis) woodburnensis

Failleana wangi

Parasphaerorthoceras accuratum

Acernaspis copperi

Falcatoproetus

Parastauria

Acernaspis orestes

Falcatoproetus falcatus

Parastriatopora

Acernaspis superciliexcelsis

Falco

Parastriatopora celebrata

Acernaspis xynon

Falsicatenipora

Parastriatopora mirifica

Acervularia

Falsicolus

Parastriatopora nigrolimitata

Acesta (Acesta) multiradiata

Falsifusus

Parastriatopora rhizoides

Acesta excavata

Fardenia

Parastrophina

Achatella

Fardenia (Coolinia) dalmani

Parastrophina angulosa

Achatella schmidti

Fardenia (Fardenia) flexa

Parastrophina lindstroemi

Achelous

Fardenia comes

Parastrophina pentagonalis

Achomosphaera

Fardenia filistriata

Parastrophinella

Achradocrinus

Fardenia modica

Parastrophinella reversa

Aciculiscala

Fardenia oblectator

Parastrophonella

Acidaspis

Fardenia transversalis

Parastylonurus

Acidaspis aviensis

Fascicostella

Parastylonurus ornatus

Acidaspis bispinosa

Fascifera

Parasyrinx

Acidaspis brightii

Fasciolaria

Paratetradium

Acidaspis evoluta

Fasciolaria bilineata

Paratetralia

Acidaspis pectinata

Fasciolaria carminamaris

Paratetralia convexa

Acidolites

Fasciolaria semistriata

Paraulopus

Acila (Acila) divaricata

Fasciolaria tulipa

Parayoungia

Acila (Acila) gettysburgensis

Fasciolites

Parayoungia brennardi

Acila (Acila) praedivaricata

Fastigiella

Parayoungia eleyae

Acila (Truncacila) castrensis

Faunus

Parayoungia folinsbeei

Acila (Truncacila) decisa

Favartia

Parayoungia mclaughlini

Acila (Truncacila) osugii

Favia fragum

Parayoungia tuberculata

Acipenser

Favia gregoryi

Parazophocrinus

Acipenser toliapicus

Favia maoadentrensis

Parechinus

Aclis

Favia somaliensis

Parechinus angulosus

Acmaea simplex

Favia vokesae

Pareora

Acmophyllum

Favistella

Pareuthria

Acmopyle

Favistina

Parinomya

Acmopyle glabra

Favitricolporites

Pariocrinus

Acmopyle setiger

Favitricolporites australis

Parisocrinus

Acnemia

Favositella

Parisocrinus mulletensis

Acocephalus

Favosites

Parka

Acodina

Favosites abnormis

Parmacella

Acodina inoptinata

Favosites adaverensis

Parmorthina

Acodus

Favosites afghanicus

Parmula

Acodus jonesi

Favosites antiquus

Parmula hemisphaerica

Acodus similaris

Favosites bowerbanki

Parodospongia

Acomys

Favosites burkhanensis

Parodospongia euhydra

Acrilla

Favosites desolatus

Paroistodus

Acrilla (Ferminoscala) berthiaumei

Favosites exilis

Paromalomena

Acrocephalus

Favosites fallax

Paromalomena inequistriata

Acrocoelum

Favosites favosiformis

Paromalomena macmahoni

Acropora abrotanoides

Favosites favosus

Paroocerina

Acropora cervicornis

Favosites gothlandicus

Paroocerina arctum

Acropora halmaherae

Favosites hisingeri

Paroocerina borealis

Acropora horrida

Favosites ingens

Parophisaurus

Acropora humilis

Favosites issensis

Paroxyclaenus

Acropora lutkeni

Favosites jaaniensis

Parulrichia

Acropora microphthalma

Favosites kalevi

Parvanachis

Acrosaccus

Favosites mirandus

Parvanachis obesa

Acrosterigma (Vasticardium) arenicola

Favosites multicarinatus

Parvicardium

Acrosterigma linguatigris

Favosites praemaximus

Parvicorbis

Acrostichum

Favosites privatus

Parvigena

Acrostichum lanzaeanum

Favosites serratus

Parvigena putealis

Acrotrichis

Favosites subfavosus

Parvilucina (Callucinella) latebrosa

Actaeites

Favosites subforbesi

Parvilucina multistriata

Actaeites lobatus

Felinotoechia

Parvisipho

Actaeopyramis

Fenestella

Pasceolus

Acteocina canaliculata

Fenestella jupiterensis

Paschatherium

Acteocina recta

Fenestella striolata

Pasitheola

Actinacis barretti

Fenestrellina

Passalocrinus

Actinacis cognata

Fenestrirostra

Passandra

Actinacis martiniana

Fenestrirostra glacialis

Pataecops

Actinidia

Fenimorea

Pataecops minutissimus

Actinidia crassisperma

Fentounia

Patella granularis

Actinoceras

Fentounia helicorostrata

Patelliocrinus

Actinoceras carletonense

Ferestromatopora

Patellispongia

Actinoceras lambei

Ferganella borealis

Patellispongia alternata

Actinoceras lesperancei

Ferrissia

Patellispongia attenuata

Actinocyclina

Fibrocrinus

Patellispongia mackenziensis

Actinocythereis

Fibrocrinus phragmos

Patellispongia rugosa

Actinocythereis orientalis

Ficopsis

Patelloida

Actinodictyon

Ficopsis meganosensis

Patene

Actinodictyon suevicum

Ficopsis remondii

Patene simpsoni

Actinodochmioceras

Ficus affinis

Patera

Actinophyllum

Ficus bernardi

Paterula

Actinopterella

Ficus lisselongata

Patinopecten lohri

Actinopteria

Ficus lucidus

Patriofelis

Actinopteria pumila

Filifascigera

Patriofelis ferox

Actinostroma

Fimbriatella

Patrobus septentrionis

Actinostromella

Finkelnburgia

Patrocardia

Acutiramus

Finksella

Pattalophyllia

Acutiramus floweri

Finksella turbinata

Pattalophyllia grumi

Acutostrea

Finmarchinella

Pattersonia

Acutostrea idriaensis

Fisherichthys

Paucicrura

Adamczakia

Fisherichthys folmeri

Pauladelphys

Adaverina

Fissurella behri

Pauladelphys juanjoi

Adaverina gutta

Fissurellidea

Paulicystis

Adcrocuta

Fistellaspongia

Paulicystis densus

Adcrocuta eximia

Fistellaspongia inclinata

Paulicystis sparsus

Adelocera

Fistulipora

Pauline

Adeorbis

Fistulipora megastoma

Pauline avibella

Adeorbis planorbularis

Fistuliporella

Paulocrinus

Admete

Fistuliramus

Paulsilvella

Admetula

Fitzroya

Paupospira

Admetula valientensis

Flabellaria

Paupospira akpatokensis

Admetula zalayana

Flabellipecten

Paupospira beatrice

Adrana

Flabellipecten sericeus

Paupospira burginensis

Adrana newcombi

Flabellitesia

Paupospira circe

Advenimus

Flabellitesia adaia

Paupospira manitouliensis

Advenimus burkei

Flabellitesia kessei

Paupospira moorei

Aechmella

Flabellum

Paupospira thebesensis

Aechmella poluzzii

Flabellum californicum

Paupospira trilineata

Aechmina

Flabellum clarki

Paupospira varians

Aechminaria

Flabellum cuneiforme

Pauromys

Aegialia

Flabellum mortoni

Paurorthis

Aegiria

Flectoconularia

Paurorthis inopinatus

Aegiria apta

Flemingella

Pavarottia

Aegiria garthensis

Flemingostrea

Pavo

Aegiria norvegica

Fletcheria

Pavona

Aegiromena

Fletcheriella

Pavona bronni

Aegiromena (Aegiromenella) planissima

Fletcheriella catervatima

Pavona cactus

Aegiromena durbenensis

Fletcherina incognita

Pavona clavus

Aelurotherium

Flexicalymene

Pavona danai

Aeneator

Flexicalymene praelongicephala

Pavona explanulata

Aepyceros

Flexicalymene quadricapita

Pavona maldivensis

Aepyceros premelampus

Flexicalymene scotica

Pecten (Pecten) carrizoensis

Aesculus

Flexicalymene senaria

Pecten (Pecten) javanus

Aesopomum

Flexicalymene vaccarii

Pecten (Propeamusium) vacavillensis

Aesopomum delicatum

Florentinoameghinia

Pecten (Swiftopecten) etchegoini

Aesopus

Florentinoameghinia mystica

Pecten coderensis

Aetholicotoxotis

Floridina

Pecten coosensis

Aethomylos

Flustrellaria

Pecten plebeius

Aethomylos simplicidens

Foersteoceras

Pedalion

Aetobatis irregularis

Foerstephyllum

Pedavis

Aetobatus

Foliomena

Pediastrum boryanum

Aetocrinus

Forcipites

Pedomphalella

Aetocrinus gracilis

Forcipites sabulosus

Peiragraptus

Agarhyncha

Forcipomyia

Pelecanus odessanus

Agaricia lamarcki

Forolina

Pelecyora

Agaronia

Forolinia

Pelekysgnathus

Agassizia porifera

Forolinia brevis

Pelekysgnathus index

Agatha

Forolinia implana

Pelicaspongia

Agathiphyllia bosniaca

Forolinia laminaris

Pelicaspongia perforata

Agathis vittatus

Forolinia lenticularis

Pelidocrinus

Agathis zamunerae

Forolinia lineata

Pelobates cultripes

Agelacrinites

Forolinia pachyphylla

Pelobates syriacus

Agerinia

Forolinia paka

Pelorochelon

Agerostrea

Fosselasma

Pelorochelon eocaenica

Agerostrea ungulatus

Fosselasma unicum

Peltocaris

Agetograptus

Fossopora

Peltosaurus

Agetolites

Foumtizia

Pelycidion

Aglaocetus burtinii

Foveomonocolpites

Pembrostrophia

Aglaoreidia

Foveotricolpites

Pemphocystis

Aglyptorhynchus

Foveotricolpites genuinus

Peneroplis

Agnocardia

Foveotricolpites pomarius

Peninsulapollis

Agnocardia cinderellae

Foveotricolporites

Peninsulapollis gillii

Agnocardia sorrentoensis

Foveotricolporites marginatus

Peninsulapollis truswelliae

Agonum

Foveotricolporites voluminosus

Penion

Agraylea

Foveotriletes lacunosus

Penniretepora

Agrenocythere

Foveotriletes margaritae

Pentacystis

Ailanthipites

Foveotriletes palaequetrus

Pentacystis gibsoni

Ailanthus lesquereuxi

Foveotriporites

Pentagonocyclicus

Ailuravus michauxi

Foveotriporites hammenii

Pentamerifera

Aivukus

Fragiscutum

Pentameroceras

Aivukus cedrosensis

Fragucrinus

Pentameroides

Akera maga

Fragucrinus bothros

Pentameroides septentrionalis

Akera pseudodesioi

Frammia

Pentameroides subrectus

Akidograptus

Francellia

Pentamerus

Akrosphaerorthoceras

Francolinus

Pentamerus asiaticus

Alaba

Franimys

Pentamerus gothlandicus

Alabamina

Fraxinus

Pentamerus oblongus

Alangium

Freja

Pentamerus palaformis

Alaskadiscus giganteus

Friginatica

Pentatoma

Alaskadiscus laticonchus

Frodospira

Pentellina

Alaskadiscus tenuis

Frodospira cochleata

Penthetria

Alaskaspongiella

Frodospira imbricata

Penthetria fryi

Alaskaspongiella laminosa

Frodospira munda

Penthetria intermedia

Alaskodiscus

Frodospira tortuosa

Pentlandella

Alaskospira

Frostiella

Pentlandia

Alaskospira dunbari

Fuchsella amygdalina

Pentlandina

Alaskospira fabiformis

Fulcrella

Pentlandina harperi

Alastega

Fulgoraria

Pentlandina lamelliformis

Alastega lira

Fulguroficus

Pentlandina lewisii

Alastor

Fulgurofusus

Pentlandina loveni

Alatacythere

Fulica

Pentlandina parvula

Albertipollenites

Fulvia tenuicostata

Pentlandina tartana

Albertipollenites perforatus

Fungia decipiens

Pentlandopterus

Albireo

Fungia pseudoechinata

Pentlandopterus minor

Alca torda

Fungiacyathus

Peradectes

Alces

Fungochitina

Peradectes chesteri

Aldanispirifer

Furcaster

Peratherium

Alderina

Furcaster leptosoma

Peratherium comstocki

Aldridgeodus

Furcitella

Peratherium innominatum

Aldridgeodus minimus

Furcitella nodosa

Peratherium matronense

Alectryonia martinsi

Furculosus

Percichthys

Aleodonta

Furculosus carpathicus

Percoideorum

Aleodonta burei

Fursenkoina

Perforocycloides

Aletornis

Fusimitra

Perforocycloides nathalieae

Aleurites

Fusimitra sanctifrancisci

Periaulax

Alforjas

Fusinus

Periconodon

Algerina algena

Fusinus merriami

Periechocrinus

Algites

Fusinus springvalensis

Periodon

Aliculastrum

Fusinus unicarinatus

Periodon aculeatus

Alisocrinus

Fusispira

Periodon grandis

Alispira

Fusispira gigantea

Peripantostylops

Allacrotelsa

Fusispira ventricosa

Periphaena

Allantodiopsis

Fusiturricula springvaleensis

Periphaena delta

Allantopora

Fustiaria

Periphragnis

Alligator

Fusus (Levifusus) trabeatus

Periphragnis harmeri

Alligator mississippiensis

Fusus climacodes

Periplacotrochus

Allocrinus

Fusus coronatus

Periplacotrochus elongatus

Allocystites

Fuyunia

Periploma eodiscus

Allodesma

Gabelia

Periporopollenites demarcatus

Allognathosuchus

Gabelia intermedia

Periretisyncolpites

Allognathosuchus polyodon

Gabelia pedunculus

Periretisyncolpites giganteus

Allonema

Gadila

Perissocoelia

Allonema silurica

Gafrarium

Perissocoelia gelasinina

Allopleuron

Galago

Perissocoelia spinosa

Allorisma

Galathea berica

Peristernia

Allotropiophyllum

Galathea valmaranensis

Peristernia ustulata

Allozygocrinus

Galaxea acrhelia

Peritrimerella

Allozygocrinus dubuquensis

Galaxea paucisepta

Pernericirrus

Allozygocrinus exallos

Galeocerdo

Pernericirrus sinistorus

Allumettoceras

Galeocerdo alabamensis

Peromonolites vellosus

Alnus

Galeocerdo clarkensis

Peromyscus antiquus

Alocopocythere

Galeocerdo cuvier

Peronopora

Alopias

Galeocerdo eaglesomi

Perplicaria

Alopias vulpinus

Galeocerdo latidens

Perrodelphys

Alopiopsis

Galeocerdo semilevis

Perrodelphys coquinense

Alopiopsis plejodon

Galeodea

Perryus

Alopocrinus

Galeodea (Gomphopages) turneri

Perryus severnensis

Alopocrinus parvus

Galeodea aegyptiaca

Perse

Alosa elongata

Galeodea bicatenata

Persea

Altaethyrella zhejiangensis

Galeodea koureos

Personella

Altaja

Galeodea sutterensis

Peruluta

Altrix

Galeodea tuberculiformis

Peruluta peruviana

Alvania

Galeodinopsis tiberiana

Pesciarichthys

Alveinus

Galeograptus

Pesciarichthys punctatus

Alveinus minutus

Galeorhinus

Pesnastylus

Alveojunctus

Galeorhinus affinis

Petalichnus

Alveolella

Galeorhinus lefevrei

Petalobrissus

Alveolina

Galeorhinus minor

Petalocardia

Alveolites

Galeorhinus ypresiensis

Petaloconchus floridanus

Alveopora

Galerita

Petaloconchus laddfranklinae

Alveopora verrilliana

Galerodus

Petalocrinus

Alytodonta

Galerodus magalius

Petalocrinus bifidus

Alytodonta gibbosa

Galeropsis

Petalograptus

Amalda

Galeus

Petalolithus

Amalda atrebatum

Gallinago

Petalotrypa

Amanocina

Galtoceras

Petenyia hungarica

Amara

Gamachignathus

Petenyiella

Amara (Paracelia) quenseli

Gambierina

Petraia

Amaurellina

Gannibeyrichia

Petraster

Amaurellina caleocia

Gaotania

Petridiostroma

Amaurellina moragai

Garabatis

Petridiostroma incrustatum

Amauropsina canaliculata

Gardineroseris planulata

Petridiostroma parsimplex

Amblyacrum

Garniella

Petridiostroma regulare

Amblychilepas

Garwoodia

Petrochirus

Amblycoptus

Gasconsia

Petrochirus bouvieri

Amblycoptus jessiae

Gasconsoceras

Petrocrania

Amblypygus

Gashternia

Petrocrania mullochensis

Amblysiphonella

Gashternia ctalehor

Petrokozlovia

Ambocoelia

Gaspocyrtoceras

Petrokozlovia notos

Ambonychia

Gaspocyrtoceras clarksoni

Petrolestes

Ambonychia alata

Gasterosteus

Petrolestes hendersoni

Ambonychia cultrata

Gasterosteus aculeatus

Petrolisthes

Ambonychia obesa

Gastrochaenolites ampullatus

Petrolisthes lineatus

Ambonychia volitans

Gastrochaenolites ornatus

Petrophyllia clarki

Ambonychinia

Gastrocopta

Petrozium

Ambonychinia corrugata

Gaudryina laevigata

Petrozium losseni

Ambonychinia demissa

Gauthieria

Petrozium staufferi

Ambonychinia striata

Gavelinopsis

Peyssonnelia

Ambonychiopsis

Gavialis browni

Pezopallichthys

Ambonychiopsis osmundsbergensis

Gazacrinus

Pezopallichthys ritchiei

Amebelodon floridanus

Gazella gaudryi

Phacoides

Ameghinomya chiloensis

Gazolaichthys

Phacoides pectinatus

Americaspis

Gazolaichthys vestenanovae

Phacopidella

Amerista

Gedanohelea

Phacopidella trisulcata

Ammodiscus

Gegania antiquata

Phacops

Ammonicera

Geiseltaliellus

Phacops crosslei

Amorphognathus

Geiseltaliellus longicaudus

Phacops macdonaldi

Amorphognathus duftonus

Geisonoceras

Phaenophragma

Amorphognathus ordovicicus

Geisonoceras kureikense

Phaenopora

Amorphognathus ordovicius

Geisonoceras maclareni

Phaenopora ensiformis

Amorphognathus ventilatus

Geisonoceras wegelini

Phaenopora explanata

Amosina

Geisonocerina

Phaenopora multifida

Amosina paolae

Gelidorthina

Phaenoporella

Amosina pediculorum

Gelidorthis

Phalacrocidaris

Amotapus

Gemellipora

Phalacrocorax carbo

Amotapus arbolensis

Gemmamonocolpites

Phalacrocorax longipes

Ampelopsis

Gemmamonocolpites amicus

Phalacrocorax mongoliensis

Amphicoelia leidyi

Gemmamonocolpites barbatus

Phalium (Semicassis) tuberculiformis

Amphicoelia pojetana

Gemmamonocolpites gemmatus

Phanassymetria

Amphicraspedum

Gemmastephanoporites

Phanerotoma

Amphicyrtoceras

Gemmastephanoporites polymorphus

Phanerotrema

Amphidolops

Gemmatricolpites

Phanerotrema axion

Amphidonta

Gemmatricolpites pulcher

Phanerotrema communis

Amphientomum

Gemmula

Phanerotrema consimilis

Amphilichas

Genartina

Phanerotrema dolium

Amphilichas dalecarlicus

Genotia

Phanerotrema jugosum

Amphilichas latifrons

Geochelone

Phanerotrema lindstroemi

Amphilichas lineatus

Geochelone sulcata

Phanerotrema occidens

Amphilichas wahlenbergi

Georissites

Phanerotrema rugosa

Amphimachairodus

Georissus

Phareodus

Amphiocoelia

Gephuropora

Pharetrolites

Amphiperatherium

Gephuropora infera

Pharetrolites cristatus

Amphiperatherium goethei

Gephuropora varia

Pharetrolites murchisoni

Amphiperatherium maximum

Gephyrapollenites

Phasianus

Amphiplecia

Gephyrocapsa

Phaulactis

Amphiplecia bondarevi

Gerasaphes

Phaulactis semaiophylloides

Amphiplecia tardicostata

Geraspis

Phellodendron

Amphipora

Geraspis rara

Phellodendron costatum

Amphipsalidocrinus

Gerbillus

Phelodinium

Amphiroa

Gerrhonotus

Phenacolemur

Amphiroa elliotti

Gerronodictyon

Phialaspis

Amphisella

Gerronostroma

Philadelphus

Amphistrophia

Gerronostroma juveneforme

Philhedra

Amphistrophia striata

Gibberella

Philhedra stawyensis

Amphistrophia whittardi

Gibberula

Philhydrus

Amphistrophiella

Gibbolucina (Eomiltha) gyrata

Philine

Amphistrophiella funiculata

Gibbolucina (Gibbolucina) gibbosula

Phillipsinella

Amphitoites

Gibbula

Philoxene

Amphitoites parisiensis

Gibbula dalli

Philoxene alacer

Amphitoxotis

Giganteograptus

Philoxene mopsus

Amphiuma

Gigantostrea

Philoxene paveyi

Amplexograptus

Gillatia

Philoxene perlongus

Amplexograptus manitoulinensis

Ginglymostoma

Philoxene plicatulus

Amplexoides

Ginglymostoma angolense

Philoxene praestans

Amplexopora

Ginglymostoma cirratum

Philoxene sodalis

Amplexus

Giraldibella

Phimocrinus

Amplogladius

Giraldibella bella

Phlebolepis

Ampulicomorpha

Giraldibella hyskovensis

Phlebolepis elegans

Ampulla

Giraldiella

Phlebolepis ornata

Ampullella nuttalli

Giraldiella giraldi

Phlyctenodes

Ampullella schencki

Giraldiella protensa

Phlyctenodes krenneri

Ampullina crassatina

Giraldiella subsilurica

Phlyctenodes multituberculatus

Ampullina ortoni

Giraliaster

Phlyctenodes tuberculosus

Ampullina oviformis

Giraliaster bellissae

Phoberomys

Ampullina vapincana

Giraliaster tertiarius

Phoenicitoechia

Ampullina vulcani

Girtyocoelia

Phoenicitoechia martinensis

Ampullinopsis

Girtyocoelia epiporata

Phoenix

Ampullinopsis crassatina

Girtyocoelia minima

Pholadidea

Ampuloides

Girvanella problematica

Pholadomya (Bucardiomya) margaritacea

Ampyx

Girvanella richmondensis

Pholadomya candida

Amsassipora

Gisortia (Megalocypraea) clarki

Pholidostrophia

Amsdenina

Gisortia (Vicetia) stefaninii

Pholidostrophia (Eopholidostrophia) cocksi

Amsdenoides

Gisortia brevis

Pholidostrophia (Mesopholidostrophia) lamellosa

Amsdenostrophiella prolongata

Gisortia gigantea

Phonicosia

Amuletum

Gisortia murchisoni

Phormocyrtis

Amusium mortoni

Gissocrinus

Phormocyrtis striata

Amyda

Gissocrinus ludensis

Phormograptus

Amyda egregia

Gitolampas

Phos

Amyda pennata

Gladiostrophia

Phos gregsoni

Amydrotaxis

Glans

Phosphannulus

Amygdalella

Glans (Glans) intermedia

Phragmoceras

Amylodon

Glans carpenteri

Phragmoceras munthei

Anabaia

Glansicystis

Phragmodictya

Anabaria

Glarichelys

Phragmolites

Anacaenaspis

Glassia

Phragmolites desideratus

Anacaenaspis callipareos

Glassina

Phragmolites lindstroemi

Anacaenaspis dealgach

Glassina laeviuscula

Phragmolites pannosus

Anacaenaspis emarginata

Glauconome plumula

Phragmolites phaecus

Anacaenaspis gotlandensis

Glauconome strigosa

Phragmolites slawsoni

Anacaenaspis zedei

Glauconomella

Phragmorthis

Anacardites

Glauconomella disticha

Phragmosphaera

Anacolosidites

Gleditsia

Phragmosphaera expansus

Anacolosidites luteoides

Globanomalina

Phragmosphaera globata

Anadara (Anadara) biformis

Globigerina apertura

Phrynops

Anadara (Anadara) tambacana

Globigerina bulloides

Phrynops geoffroanus

Anadara (Cunearca) chemnitzii

Globigerina triloculinoides

Phryssonotus

Anadara (Cunearca) hindsi

Globigerinatheka

Phthonia

Anadara (Cunearca) lloydi

Globigerinella

Phthonia regularis

Anadara (Grandiarca) patricia

Globigerinella aequilateralis

Phygadeuon

Anadara (Grandiarca) usiacurii

Globigerinella siphonifera

Phygraea pacifica

Anadara (Hawaiarca) donacia

Globigerinoides

Phyllacanthus leoni

Anadara (Larkinia) notabilis

Globigerinoides conglobatus

Phyllangia blakei

Anadara (Rasia) costaricensis

Globigerinoides elongatus

Phyllocladidites

Anadara (Rasia) emarginata

Globigerinoides extremus

Phyllocladidites mawsonii

Anadara (Rasia) honensis

Globigerinoides obliquus

Phyllocladus

Anadara prephina

Globigerinoides tenellus

Phyllocladus aspleniifolius

Anadara trilineata

Globisinum

Phyllodactylus

Ananaspis

Globispira acuta

Phyllodictya

Anancus

Globocassidulina

Phyllodus

Anancus arvernensis

Globoconella miozea

Phyllodus toliapicus

Anancus kenyensis

Globoconusa

Phylloporina

Anapella

Globonema

Phylloporina kinnekullensis

Anapetopsis

Globonema fraternum

Phymatolithon

Anapetopsis fasciatus

Globonema kaysi

Phymorhynchus

Anapetopsis fastigiatus

Globonema kokeni

Phymotaxis

Anapetopsis lalajae

Globonema lyelli

Phyrtosaster

Anapetopsis maclearni

Globonema muricatum

Phyrtosaster casteri

Anaphragma

Globonema pauperum

Physodon secundus

Anapteris

Globonema peregrinum

Physodon tertius

Anapteris regalis

Globonema turritum

Physogaleus

Anartiocystis

Globorotalia (Hirsutella) margaritae

Physogaleus secundus

Anartiocystis foerstei

Globorotalia (Menardella) limbata

Picus

Anasobella

Globorotalia (Menardella) pseudomiocenica

Pidelocrinus

Anaspyroceras

Globorotalia (Truncorotalia) crassaformis

Pileograptus

Anastrophia

Globorotalia crassata

Pilina

Anastrophia deflexa

Globorotalia plesiotumida

Pilina solarium

Anatiferocystis

Globorotalia tumida

Pilina unguis

Anatina anatina

Globorotaloides

Pilla

Anatoma

Globotruncana

Pilolepsis

Anatrypa

Globoturborotalita apertura

Pilophyllia

Anazyga

Globularia grossa

Pilophyllum

Anazyga recurvirostra

Globulaspis

Pilophyllum massivum

Anchoa

Glomalveolina

Pilophyllum porosum

Ancilla

Glomospira

Pilophyllum zonatum

Ancilla (Ancilla) junghuhni

Glomospirella

Pinguaella

Ancilla (Eburna) pinguis

Glossites

Pinguispirifer

Ancilla (Spirancilla) gabbi

Glossites (Pharciglossites) rugatus

Pinna barrowsi

Ancilla buccinoides

Glossoceras

Pinna llajasensis

Ancilla canalifera

Glossograptus

Pinna margaritacea

Ancilla staminea

Glossoleptaena

Pinnocaris

Ancillarina

Glossoleptaena emarginata

Pinnocaris lembodes

Ancillopsis

Glossoleptaena pixis

Pinocladia

Ancillotoechia

Glossus

Pinocladia triangulata

Ancillotoechia ancillans

Glycymeris (Glycymeris) rosecanyonensis

Pinpilla

Ancillotoechia bidentata

Glycymeris brevirostris

Pinpilla uformis

Ancillotoechia eva

Glycymeris decussata

Pinus dixoni

Ancistrocrania

Glycymeris dispar

Pionodema

Ancistrodon lybicus

Glycymeris eocenica

Pionodema aberstadti

Ancistromesus

Glycymeris fresnoensis

Pionodema hypermeca

Ancistrorhyncha

Glycymeris glycymeris

Piperites

Ancistrosyrinx terebralis

Glycymeris idonea

Pipistrellus

Ancistrosyrinx volgeri

Glycymeris perrini

Pirenella

Ancoradella

Glycymeris sagittata

Pironastrea

Ancoradella ploeckensis

Glycymerita major

Pironastrea discoides

Ancylotherium

Glycymerita veatchii

Pirula ficus

Ancyrochitina

Glyphea christeyi

Pisania

Andicula

Glyphea reticulata

Piscoacritia

Andreolepis

Glyphithyreus

Piscoacritia collapsa

Anechinocardium

Glyphithyreus weaveri

Pisocrinus

Anechinocardium lorenzanum

Glyphithyreus wetherelli

Pisocrinus campana

Anemia poolensis

Glyptambon

Pisocrinus sphericus

Anemia subcretacea

Glyptoactis (Claibornicardia) domenginica

Pisodus

Anemorhysis

Glyptoactis (Claibornicardia) sandiegoensis

Pisodus oweni

Angochitina

Glyptoactis alticostata

Pison

Angopora dubia

Glyptocrinus

Pistacia

Angopora hisingeri

Glyptograptus

Pisulina

Angopora tenuicula

Glyptograptus tamariscus

Pitar

Angopora vera

Glyptomena

Pitar (Calpitaria) carteri

Anguilla

Glyptorthis

Pitar (Calpitaria) sulcatarius

Anguis

Glyptorthis crispata

Pitar (Lamelliconcha) joaquinensis

Angullongia vesica

Glyptorthis daytonensis

Pitar (Pitar) cercadica

Angullophyllum

Glyptorthis fausta

Pitar (Pitar) ovatus

Angulogerina

Glyptorthis insculpta

Pitar quadratus

Angulospira

Glyptorthis irrupta

Pitar uvasana

Angulospira striata

Glyptorthis marilara

Pitaria

Anhinga melanogaster

Glyptorthis maritima

Pithanodelphis

Anhinga rufa

Glyptorthis vidari

Pittsfordipterus

Anisocrinus

Glyptosaurus

Placamen calophylla

Anisocrinus prinstaensis

Glyptosaurus sylvestris

Placamen calophyllum

Anisocycla

Glyptostrobus

Placocliftonia

Anisodonta

Glyptostrobus pensilis

Placocliftonia colibri

Anisolambda

Glyptostyla

Placocoenites

Anisopleurella

Gnamptorhynchos

Placocoenites orientalis

Anisopleurella anceps

Gnamptorhynchos globatum

Placocoenites pellicula

Anisopleurella asiatica

Gnamptorhynchos orbiculoidea

Placocyathus

Anisotrypa

Gnathodus

Placocyathus alveolus

Anisus

Gnophomyia

Placocyathus barretti

Ankyloceras

Gnorimocrinus

Placocyathus variabilis

Annachlamys flabellatus

Gnoriste

Placocystites

Annutriporites

Gobiatherium

Placosauriops

Annutriporites iversenii

Gobiatherium mirificum

Placosaurus

Anobium

Gobiolagus

Placosmilia limburgica

Anodonta

Gochtia

Placotriplesia

Anodontia

Goldillaenus

Placuna (Ephippium) ephippium

Anodontites

Goldius

Placuna (Placuna) placenta

Anodontopsis

Gomphina

Placunanomia lithobleta

Anolotichia ponderosa

Gomphoceras

Plaesiomys

Anomalina ammonoides

Gomphocystites

Plaesiomys anticostiensis

Anomalinoides

Gomphocystites glans

Plaesiomys bellilamellosus

Anomalocoelia

Gomphocystites indianensis

Plaesiomys carletona

Anomalocystites

Gomphodus

Plaesiomys idahoensis

Anomalodonta gigantea

Gomphonchus

Plaesiomys porcata

Anomalotoechus

Gomphonchus hoppei

Plaesiomys rockymontana

Anomia achaeus

Gomphonchus sandelensis

Plaesiomys subquadratus

Anomia anomialis

Gomphos

Plagiarca

Anomia mcgoniglensis

Gomphotaria

Plagiocardium

Anomia tenuistriata

Gomphotaria pugnax

Plagiorhyncha

Anomotodon

Gonatocaris

Plagiorhyncha cordata

Anonaspermum

Gongylostonyx

Plagiorhyncha depressa

Anonaspermum pulchrum

Goniastrea

Plagiostomoceras

Anoplotheca

Goniastrea edwardsi

Plagiostomoceras culter

Anoptambonites

Goniastrea insignis

Plagiostomoceras pleurotomum

Anoptambonites myiomorpheus

Gonimyrtea

Planalveolites

Anoptambonites myriomorpheus

Goniochele

Planaxis

Anoptambonites williamsi

Goniocypoda

Planera

Anoptera angusta

Goniocypoda edwardsi

Planicellaria

Anorthoscutum

Goniodontus lindstroemi

Planiscutellum

Anorthoscutum oregonensis

Goniophora

Planitrochus

Anostylostroma

Goniophora (Goniophora) cymbaeformis

Planocoenites

Anourosorex

Goniophora ascia

Planolites montanus

Anoxypristis

Goniophora bragei

Planorbina

Ansella

Goniophora brimeri

Planorbulinella

Ansella jemtlandica

Goniophora compta

Plantella

Antarctodarwinella

Goniophora gymeri

Plasmophyllum

Antarctodolops

Goniophora solci

Plasmopora

Antarctodolops dailyi

Goniophora thula

Plasmoporella

Antarctodolops mesetaense

Goniophora tyri

Plastomenus

Antarctodon

Goniophorina

Plastomiltha

Antarctodon sobrali

Goniophorina (Cosmogoniophorina) carinata

Platanophyllum

Antarctohoges

Goniophorina nitidula

Platidia

Antepithecus

Goniophyllum

Platipygus

Antepithecus brachystephanus

Goniopora

Platonea

Anthaspidella

Goniopora columna

Platybelodon loomisi

Anthaxia

Goniopora elegans

Platycarya

Antherophagus

Goniopora imperatoris

Platyceras

Anthicus

Goniopora microscopica

Platyceras angulatum

Anthinocrinus

Goniopora reussiana

Platyceras disciforme

Anthracomys

Goniopora tenuidens

Platyceras niagarensis

Antiacodon

Goniosphaeridium

Platyconus

Antiacodon pygmaeus

Goniostropha bachelieri

Platycoryphe

Antiacodon venustus

Goniotrypa

Platycyathus grahami

Anticalyptraea

Goniotrypa bilateralis

Platygyra

Anticalyptraea westergaardi

Goniporus

Platylaemus

Anticlimax

Goniporus alatus

Platylaemus colei

Anticostia

Goodallia

Platylichas

Anticostiodus

Goodsiraspis

Platylichas (Rontrippia) grayii

Anticostiodus fahraeusi

Goodsiraspis packardi

Platylichas cicatricosus

Antidorcas

Gorbyoceras

Platylichas infimus

Antiguastrea cellulosa

Gorbyoceras gorbyi

Platyloron

Antihomocrinus

Gorbyoceras hammelli

Platyloron voluta

Antillia turbinata

Gordia

Platymena

Antillipecten antillarum

Gordonaster

Platymetopus

Antillipecten quemadosensis

Gordonaster brassfieldensis

Platynus

Antillocyathus cristatus

Gorgonisphaeridium

Platyoptera

Antillophos

Gosavia

Platyoptera pacifica

Antillophyllia

Gosavia humberti

Platyorthis

Antillophyllia constricta

Gosavia multidentata

Platyorthis ovalis

Antilloseris

Gotatrypa

Platyostoma

Antilospira

Gothanipollis

Platyostoma adstrictum

Antiplectoceras

Gothanipollis bassensis

Platyostoma boggsi

Antiplectoceras askerense

Gothocrinus

Platyostoma brownsportense

Antirhynchonella

Gothograptus

Platyostoma cliftonensis

Antirhynchonella linguifera

Gotlandechinus

Platyostoma cornutum

Antocha

Gotlandella

Platyostoma daytonense

Antrospongia

Gotlandellites

Platyostoma hemispherica

Antrospongia aberrans

Gotlandites

Platyostoma humile

Apalone

Gotlandochitina

Platyostoma niagarensis

Aparchites

Gotlandochiton

Platyostoma perforatum

Apatemys

Gotlandochiton interplicatus

Platyostoma plebeium

Apatemys bellulus

Gourmya

Platyostoma ventricosum

Apatemys bellus

Grabauphyllum

Platyphoca

Apatemys rodens

Gracianella

Platypygus

Apatobolbina

Gracianella graciosa

Platyrhina

Apatognathus

Gracianella lissumbra

Platyrhina bolcensis

Apatognathus lipperti

Gracianella rudicristata

Platyrhina egertoni

Aphanomena chilcaensis

Gracilechinus

Platyrhina gigantea

Aphanomena planoconvexa

Graciliala

Platyrhomboides

Aphanomena schmalenseei

Graminidites

Platyschisma

Aphanomena urbicola

Grammolomatella

Platyschisma infima

Aphanus

Grammysia

Platystrophia

Aphelognathus

Grandostoma

Platystrophia acutilirata

Aphelognathus pyramidalis

Grandostoma caudatum

Platystrophia annieana

Aphrophora

Grandostoma taconicum

Platystrophia biforatus

Aphrosalpinx

Granosolarium

Platystrophia clarksvillensis

Aphrosalpinx nana

Granosolarium pulchrum

Platystrophia crassoplicata

Aphrosalpinx textilis

Granulatisporites

Platystrophia cypha

Apianurus

Granulifusus

Platystrophia hopensis

Apianurus clevei

Granulifusus niponicus

Platystrophia laticosta

Apiculatasporites cingulatus

Granulolabium maccus

Platystrophia lynx

Apiculatasporites obscurus

Graphularia

Platystrophia ponderosa

Apiculiretusispora

Graptodictya

Platythyrea

Apidium indicum

Graptodictya boreniensis

Platytrochalos

Apiocystites

Graptolites

Platytrochalos crudicostatus

Apiotoma

Graptopsaltria

Platytrochalos peninversus

Aplexa

Graticula

Platytrochalos pulvinatus

Aplousina

Gravicalymene

Platytrochus claibornensis

Apoarchaeocrinus

Gravicalymene quadrata

Plecia

Apoarchaeocrinus anticostiensis

Grayina

Plecia avus

Apocalymene

Greenfieldia

Plecia canadensis

Apocricetus

Gregariella

Plecia curtula

Apocricetus alberti

Grewingkia

Plecia dilatata

Apocricetus barrierei

Grewingkia contexta

Plecia pictipennis

Apocynophyllum

Grewingkia robustum

Plecia pulchra

Apocynospermum

Grovesia

Plecia reducta

Apodemus

Grovesia ganensis

Plecia similkameena

Apolichas

Gryllus

Plecia transitoria

Apolichas truncatus

Gryphaeostrea vomer

Plecia tulameenensis

Aporolepas

Gryphoca nordica

Plecia vergnei

Appendispinograptus

Grypocrinus

Plecotus

Appendispinograptus supernus

Guandacolithus

Plectambonites schmidti

Appendispinograptus venustus

Guelphinacella

Plectatrypa

Apsidoceras

Guelphinacella canadense

Plectatrypa imbricata

Apsidognathus

Guembelitria

Plectatrypa lamellosa

Apsidognathus tuberculatus

Guerichina

Plectatrypa savagei

Apsidognathus walmsleyi

Guildfordia

Plectatrypa unicosta

Aptilechinus

Guilielmoscottia

Plectina

Aptychopsis

Guilielmoscottia plicifera

Plectoceras

Apycnodiscus

Guinotosia

Plectochitina

Apycnodiscus insularis

Guiyu

Plectodina

Aquirrea

Guiyu oneiros

Plectodonta

Aquirrea fluegelii

Gujaratia pakistanensis

Plectodonta (Plectodonta) mariae

Arabellites

Gulo

Plectodonta (Plectodonta) minima

Arachnophyllum

Gunnarella

Plectodonta bipartita

Arachnophyllum approximatum

Gunnarella magnifica

Plectoglossa

Arachnophyllum murchisoni

Gurabopecten

Plectograptus

Arachnophyllum pentagonum

Gurabopecten uniplicatus

Plectonotoides boucoti

Arachnostega

Guttulina problema

Plectonotoides cherylae

Arachnostega gastrochaenae

Gymnosarda

Plectonotoides trilobatus

Aracispermum

Gymnostoma

Plectonotus

Araeopoma

Gymnura

Plectonotus derbyi

Araliaceoipollenites

Gypidula

Plectorthis

Araliophyllum

Gypidula akimiskiformis

Plectorthis plicatella

Araloselachus

Gypidula galeata

Plectosolen

Araloselachus cuspidatus

Gypidula rudiplicativa

Plectospathodus extensus

Araneosustroma

Gypidula simplex

Plectospira

Araneosustroma astroplexum

Gypidulina

Plectostroma

Araspirifer

Gyps

Plectostroma intertextum

Aratanea

Gypsina

Plectostroma necopinatum

Aratanea monodi

Gyriabrus

Plectothyrella

Aratoechia

Gyrineum

Plectothyrella crassicosta

Araucaria annulata

Gyrineum californicum

Plectothyrella itacurubiensis

Arbacia sloani

Gyrinodon

Plectotreta

Arca avellana

Gyrocochlea

Plectotreta lindstroemi

Arca clathrata

Gyrodina

Plectrochiton

Arca lactea

Gyrodoma

Plectrochiton tegulus

Arca santamariensis

Gyrodoma marylandica

Plectropterus

Archaebalaenoptera

Gyroidina planulata

Plegagnathus

Archaefenestella

Gyroidinella

Plegagnathus dartoni

Archaefenestella mobergi

Gyroidinoides

Plegmatograptus

Archaeocalyptocrinus

Gyrolithes

Pleiodon

Archaeocarabus

Gyronema

Pleiolama vera

Archaeodesmana

Gyrosphaera

Plemeroceras

Archaeofenestella

Gyrosphaera raneatela

Plemeroceras cassis

Archaeohyrax

Gyrosphaera siljanensis

Pleostylostroma

Archaeolambda

Hadoceras

Pleroma aotea

Archaeolithothamnium lugeoni

Hadoceras septocurvatum

Plesicarinatina

Archaeolithothamnium nummuliticum

Hadralucina

Plesiobalaenoptera

Archaeolithothamnium oulianovi

Hadralucina augustana

Plesiocathartes

Archaeolithothamnium parisiense

Hadrianus

Plesiolacerta lydekkeri

Archaeomanta

Hadrianus allabiatus

Plesiolampas

Archaeomanta melenhorsti

Hadrianus corsoni

Plesiomegatherium

Archaeonycteris

Hadrianus robustus

Plesiotriton

Archaeophialia

Hadrianus utahensis

Plesiowensus

Archaeophialia antiquissima

Hadrodus

Plesiowensus confossus

Archaeopithecus

Hadrognathus

Plesiowensus obconicus

Archaeopithecus rogeri

Hadromeros

Plethobolbina

Archaeopotamus

Hadromeros elongatus

Pleurocornu

Archaeopotamus harvardi

Hadromeros keisleyensis

Pleurocystites beckeri

Archaeopotamus lothagamensis

Hadrophyllia

Pleurodictyum

Archaeopraga

Hadrophyllia saundersi

Pleurodium

Archaeopraga pinnaeformis

Hadroskolos

Pleurofusia

Archaeopus

Hadroskolos pentastichos

Pleurograptus

Archaeorchestes

Haedropleura

Pleurograptus linearis

Archaeoscyphia

Haemulidarum

Pleuroguettardia

Archaeoscyphia alternata

Hagiosynodos

Pleuroliria

Archaeoscyphia attenuata

Hagiosynodos latus

Pleuromeris

Archaeoscyphia boltoni

Hagnocrinus

Pleuromeris (Choniocardia) decussata

Archaeoscyphia gislei

Hagnocrinus bainbridgensis

Pleuromeris acaris

Archaeoscyphia minganensis

Hagnocrinus balli

Pleuronea

Archaeoscyphia rectilinearis

Hagnocrinus crenus

Pleuroploca

Archaeoscyphia scalaria

Haimea

Pleuroploca olssoni

Archaeospheniscus

Haimesastraea

Pleurorima

Archaeospheniscus wimani

Haimesiastraea

Pleurorima cytherea

Archaeoteleia

Haimesiastraea conferta

Pleurorima kayseri

Archaeotetra

Halichondrites

Pleurorima leptoconcha

Archegonaspis

Haliestes

Pleurorima migrans

Archeochonetes muirwoodae

Haliestes dasos

Pleurorima pragensis

Archicypraea

Haliotis

Pleurorima tranquilla

Archicypraea prisca

Haliotis (Padollus) clathrata

Pleurorima wisbeyensis

Archimyrmex

Haliotis saldanhae

Pleurorthoceras

Archimyrmex rostratus

Hallicystis

Pleurorthoceras clarksvillense

Archinacella

Halliella

Pleurorthoceras osmundsbergense

Archinacella estella

Hallograptus

Pleurorthoceras subcostatum

Archinacella indianensis

Hallopora

Pleurostoma

Archinacella kagawongensis

Hallopora dalmani

Pleurostylodon

Archinacella laevis

Hallopora elegantula

Pleurotoma fresnoensis

Archinacella rotunda

Hallopora multipora

Pleurotomaria

Archinacella rugatina

Hallopora solbergiensis

Pleurotomaria (Euryzone) comatula

Archipelepis

Halloysia

Pleurotomaria alatus

Archipelepis turbinata

Halonympha

Pleurotomaria viola

Archipsocus

Haloragacidites

Pleurotomella

Archipsocus puber

Haloragacidites harrisii

Plexodictyon

Archiretiolites

Haloragis

Plexodictyon gobiense

Architectonica (Architectonica) maxima

Halysis

Plicacesta

Architectonica (Stellaxis) cognata

Halysites

Plicanoplia

Architectonica alabamensis

Halysites catenularia

Plicapollis

Architectonica llajasensis

Halysites catenularius

Plicatomurus

Arcinella cornuta

Halysites grandis

Plicatula filamentosa

Arcopsis

Halysites junior

Plicidium

Arcopsis (Arcopsis) gembacana

Halysites priscus

Plicirhynchia

Arcticalymene

Halysites regularis

Plicirhynchia plicigera

Arctinurus

Halysites senior

Plicocyrtia

Arctinurus anticostiensis

Hamamelites

Plicodendrocrinus

Arctinurus boltoni

Hamarodus

Plicodendrocrinus petryki

Arctomeristina

Hamarodus europaeus

Pliconacca

Arctoplax

Haminoea

Plicoplasia

Arctoplax ornata

Hanilepis

Plicostricklandia

Arcualla

Hannatoma

Plicostropheodonta

Arcuaria

Hannatoma gesteri

Pliocervus

Arcuatula

Hanyangaspis

Pliomegatherium

Arechia

Hanyangaspis guodingshanensis

Pliomegatherium lelongi

Arecipites regio

Hapalocrinus

Pliopentalagus

Arene

Hapalocrinus quinquepennis

Pliopetaurista

Arene mcleani

Hapalodectes

Pliopetes

Arenorthis

Hapalodectes serus

Pliophoca

Arenorthis arenaria

Haplentactinia

Pliophoca etrusca

Arenorthis paranaensis

Haplistion

Pliopontos

Areostrophia

Haplistion creswelli

Pliopontos littoralis

Argentina

Haplistion cylindricum

Pliotaxidea

Argillochelys

Haplistion frustrum

Pliotaxidea nevadensis

Argillochelys antiqua

Haplistion minutum

Pliothyrina sowerbyana

Argillotherium toliapicum

Haplistionella

Plohophorus

Argopecten demiurgus

Haplistionella garnieri

Plohophorus figuratus

Argopecten deserti

Haplistionella minitraba

Plumatalinia

Argopecten eccentricus

Haplomylus

Plumulites

Argopecten inaequalis

Haploprimitia

Pluricellaesporites

Argopecten irradians

Haplosphaeronis

Pocillopora jenkinsi

Argopecten parathetidis

Haplosphaeronis oblonga

Pocillopora verrucosa

Argopecten ventricosus

Haplospira craigi

Podocarpidites microreticuloidata

Argyrolagus

Haplotaeniatum

Podocarpidites rugulosus

Ariadnaria

Haplotaeniatum cathenatum

Podocnemis

Ariaspis arctata

Hapsiphyllum

Podocnemis argentinensis

Ariaspis ornata

Haptocrinus

Podocyrtis (Lampterium) sinuosa

Arionoceras

Hardieopterus

Podocyrtis (Podocyrtis) diamesa

Arionoceras canonicum

Hardieopterus macrophthalmus

Podocyrtis (Podocyrtis) papalis

Arionoceras capillosum

Harpa

Pododesmus (Monia) macrochisma

Arionoceras densiseptum

Harpa conoidalis

Podollites

Arisaigaster

Harpa mutica

Podollites diseptatus

Arisaigia

Harpactocarcinus

Podophthalmus

Arjamannia

Harpactoxanthopsis

Podophthalmus fusiformis

Arjamannia aulangonensis

Harpactoxanthopsis quadrilobata

Podowrinella

Arjamannia cancellatula

Harpagolestes

Podowrinella straitonensis

Arjamannia inexpectans

Harpalus

Pogonias

Arjamannia pteronoides

Harpes

Poikilofusa spinata

Arjamannia sybellina

Harpidella

Poirieria

Arjamannia woodlandi

Harpidella (Harpidella) newlandensis

Poirieria (Paziella) dominicensis

Arkonoceras

Harpidella (Harpidella) thomasi

Pojetaconcha

Armenoceras

Harpidella megalops

Pojetaconcha davidis

Armenoceras chicottense

Harpidella occidentalis

Pojetaconcha praepristis

Armenoceras cygneum

Harpidium

Polenovula

Armenoceras michaudae

Harringtonacaste

Poleumita

Armenoceras nummularium

Harringtonia

Poleumita alatum

Armenoceras raptor

Harrisichara

Poleumita crenulata

Armenoceras subconicum

Harrisoceras

Poleumita discors

Arminiheringia

Hastigerina

Poleumita gyrans

Arthroclema brevis

Hastula

Poleumita hudsonica

Arthroclema pentagonalis

Hataiella

Poleumita incarinatus

Arthropoma

Haustator

Poleumita octavia

Arthropoma latigastra

Haustator contractus

Poleumita rugosa

Arthrorhachis

Haustator granulosa

Poleumita scamnata

Arthrotrypa

Haustator imbricataria

Poleumita semiplanus

Arthrotrypa ovata

Haustator mitis

Poleumita vernonensis

Artocarpus

Haustator rina

Poleumita walmstedti

Artostobium

Haustator uniangularis

Polinella

Arvicanthis

Haustellum polynematicus

Polinices (Euspira) hotsoni

Asaphocrinus

Havlicekia

Polinices (Euspira) rectus

Ascanigypa

Haydnella

Polinices albumen

Ascetopeltis

Haydnella maladensis

Polinices candidissimus

Ascoceras

Healdia

Polinices eminulus

Ascograptus

Healdianella

Polinices hornii

Asiatosuchus

Hebellum

Polinices lacteus

Asiatosuchus germanicus

Hebertella

Polinices subtenuis

Asinomphalus

Hebertella maria

Polistes

Asinomphalus antiqua

Hebertella occidentalis

Poloniella

Asiomys

Hebertella sinuata

Polotricolporites

Asiomys dawsoni

Hebetoechia

Polotricolporites concretus

Asmithwoodwardia

Hecetaphyton

Polotricolporites mocinnii

Asmithwoodwardia subtrigona

Hecetastoma

Polyascosoecia

Asoriculus

Hecetastoma clarki

Polybothris

Aspeluindia

Hecetastoma gehrelsi

Polybranchiaspis

Aspelundia

Hecetastoma salteri

Polychaetaspis

Aspelundia fluegeli

Hedecardium

Polycolpites

Asperarca

Hedeia

Polycolporopollenites

Asperophyllum

Hedeina

Polycolporopollenites esobalteus

Asperopora

Hedeina crispa

Polydectes biturgidus

Asperopora crustulenta

Hederella

Polydeltoideus

Aspidograptus

Hederella canadensis

Polydeltoideus enodatus

Aspidopora

Hedstroemina

Polydolops

Aspius

Hedstroemina reticulata

Polydolops rothi

Assilina

Hedstroemophyllum nikiforovae

Polydolops unicus

Astakocrinus

Heikea nux

Polydora

Astakocrinus teren

Heikea reniformis

Polygireulima

Astarte

Heikea rotunda

Polygnathoides

Astarte (Digitariopsis) obliquata

Helagras

Polygrammoceras

Astegotherium

Helaletes

Polygrammoceras chicottense

Astele

Helenolepis

Polygrammoceras ellisense

Asterigerina

Helenolites

Polygyra

Asterigina

Heliacus

Polymesoda

Asterosmilia

Helicelasma

Polymorphina

Asterosmilia abnormalis

Helicelasma rusticum

Polynices hornii

Asterosmilia hilli

Helicelasma simplex

Polyorophe

Asterosmilia profunda

Helicelasma whittardi

Polyplacospongia

Asthenophyllum

Helicocrinus

Polyplacospongia nodosa

Astraea

Helicodiscus

Polypodiaceoisporites fossulatus

Astraeospongia

Heliconoides

Polypodiidites speciosus

Astraeospongium

Helicotoma brocki

Polypodiisporites inangahuensis

Astrangia

Helicotoma marginata

Polypora

Astreopora auvertiaca

Helicotoma superba

Polyporina

Astreopora esperanzae

Heligmotenia

Polyrhachis

Astreopora hexaphylla

Heligmotenia molli

Polystira ecuadoriana

Astreopora sanjuanensis

Heligmotoma

Polytropis durhamensis

Astreopora tecta

Heliocrinites

Polytryphocycloides

Astrocerium

Heliocrinites stellatus

Polytryphocycloides huronensis

Astrocoenia dilloni

Heliolites

Polytryphocycloides lindstroemi

Astrocoenia gregoryi

Heliolites barrandei

Pomacea

Astrocoenia immersa

Heliolites waicunensis

Pomerantsoceras

Astrocoenia nana

Helioplasma

Pomerantsoceras tibia

Astrodapsis fernandoensis

Helioplasmolites

Pompeckia

Astropentagnathus

Heliopora bennetti

Pompeckia minor

Astropentagnathus irregularis

Helix

Ponerites

Astroproetus

Helix dentata

Ponomarenkoa

Astroproetus pseudolatifrons

Helladotherium

Pontifactor

Astroscopus

Helminthidium

Pontifactor bestiola

Astroviella

Helminthochiton

Pontolis

Astroviellina

Helminthoidichnites

Pontosphaera

Astya

Helminthoidichnites marinus

Popenoeum

Astya nielseni

Helochares

Poracanthodes

Astylospongia

Helohyus

Porefieldia

Astylospongia lutera

Helokybe

Porefieldia robusta

Astylospongia praemorsa

Helophorus tuberculatus

Porella

Astylospongiella

Heloplax

Porfirieviella

Astylospongiella striola

Heloplax papilla

Porites

Astyris

Helopora

Porites convivatoris

Atactocrinus

Helopora fragilis

Porkunioceras

Atactocrinus wilmingtonensis

Hemiacodon

Porkunioceras tuba

Atactoporella

Hemiacodon gracilis

Porkunites amalloides

Atactotoechus

Hemiagetolites longiseptatus

Porkunites dubius

Atavograptus

Hemiagetolites palaeofavositoides

Porocidaris

Atavograptus atavus

Hemiagetolites spinimarginatus

Porosothyone

Ataxocerithium

Hemiarges

Porosothyone picketti

Ateleaspis

Hemiarges extremus

Porpites

Atelerix

Hemicerithium

Porpites rotuloides

Atelodictyon

Hemiconus

Porterius

Athenaegis

Hemicosmites

Portlandella

Athenaegis chattertoni

Hemicosmites grandis

Portlandia arctica

Athene

Hemicosmites sculptus

Portranella

Atherospermophyllum

Hemicosmites variabilis

Portunus

Atherospermophyllum guinazui

Hemicosmorthoceras

Portunus monspeliensis

Athleta

Hemicosmorthoceras laterculum

Postalia

Athleta (Neoathleta) cithara

Hemicosmorthoceras semimbricatum

Potamides (Ptychopotamides) tricinctus

Athleta (Neoathleta) mutatus

Hemicyclaspis

Potamochoerus

Athleta (Volutocorbis) burtoni

Hemicyclopora

Praeanomalodonta

Athleta lata

Hemicystites

Praeanthropus

Athleta petrosa

Hemieridotrypa

Praeanthropus africanus

Athous

Hemilepton nitidum

Praecardium

Athyris

Heminematopora

Praectenodonta

Atilax

Hemiphyllum

Praeidiostroma

Atlantoxerus rhodius

Hemipristis serra

Praeleda compar

Atractopyge

Hemiscyllium

Praelucina

Atractopyge brevicauda

Hemiseptella

Praenucula

Atractopyge confusa

Hemisinus

Praenucula abrupta

Atractosteus

Hemisphaerammina

Praenucula dispar

Atrina affinis

Hemisurcula

Praenucula faba

Atrypa

Hemisyntrachelus

Praeostrea

Atrypa (Gotatrypa) blodgetti

Hemitelia magna

Praeostrea bohemica

Atrypa (Gotatrypa) hedei

Hemithiris

Praerhapydionina

Atrypa (Gotatrypa) variabilis

Hemithiris antarctica

Praescissurella

Atrypa dormitzeri

Hemitoechia

Pragamira

Atrypa hedei

Hemitoechia distincta

Pragamira perlonga

Atrypa putilla

Hemitoechia undvaensis

Pragnellia

Atrypa reticularis

Hemitoma

Pranognathus

Atrypella borealis

Hemsiella

Pranognathus siluricus

Atrypella scheii

Hennigopora

Prantlia

Atrypella tenuis

Hennigopora apta

Prasopora

Atrypina

Henricosbornia

Pregazacrinus

Atrypina barrandii

Henricosbornia lophodonta

Premontreia

Atrypinella

Heptadiodon

Preodontochile

Atrypinopsis

Heptadiodon echinus

Preodontochile springfieldensis

Atrypoidea australis

Heptranchias

Presbyorniformipes

Atrypoidea latilingulata

Hercochitina

Presbyorniformipes feduccii

Atrypoidea linguata

Hercoglossa

Presbyornis

Atrypoidea praelingulata

Hercoglossa ulrichi

Presbyornis pervetus

Atrypoidea prunum

Hercotrema

Prestrombus

Atrypoidea scheii

Hercotrema pentaforma

Prestrombus rockei

Atrypopsis severnensis

Hercotrema spissicostatum

Pribylites

Attagenus

Hercynella

Pribylograptus

Attenuata

Here

Primaspis

Aturia

Herkosporites

Primaspis evoluta

Aturia myrlae

Herkosporites elliottii

Primelephas

Aturia myrli

Hermanites

Primelephas korotorensis

Aturia ziczac

Hermatostroma

Primitia

Aturoidea

Herminespina philippi

Primitia lativia

Aturoidea brunnschweileri

Herminespina saskiae

Primitiella

Atys

Hernodia

Primitiopsis

Atys naucum

Heropyrgus

Primobucco

Auchenaspis

Heropyrgus disterminus

Primorilestes

Auchenaspis verrucosus

Herpestes sanguineus

Prionace

Augustoceras molense

Herpetocetus bramblei

Prioniodina

Aulacatrypa

Herpetocrinus

Prioniodina excavata

Aulacera

Herpetotherium

Prioniodus

Aulacera cylindrica

Herpetotherium innominatum

Prionopeltis

Aulacera nodulifera

Herpetotherium knighti

Priscacara

Aulacera plummeri

Herpetotherium marsupium

Priscacara campi

Aulacera radiata

Herrmannina

Priscaphander

Aulacera undulata

Hertha

Priscoficus

Aulacognathus

Hertleinia

Priscoficus smithii

Aulacognathus bullatus

Hertleinia angosturana

Priscofusus

Aulacognathus latus

Hertleinia miranda

Priscolongatus

Aulacopleura

Hesperiturris

Priscopedatus anceps

Aulica (Aulica) scapha

Hesperiturris nodocarinatus

Priscosolenia

Aulocopium

Hesperorthis

Priscosolenia aliena

Aulocopium nana

Hesperorthis avalanchensis

Priscosolenia perarmata

Aulocystella

Hesperorthis davidsoni

Priscosolenia prisca

Aulopora

Hesperorthis gotlandica

Prisochiton

Aulopora amica

Hesperorthis hillistensis

Prisogaster

Aulopora assueta

Hesperorthis martinssoni

Prisogaster mcleani

Aulopora celsa

Hesperorthis onniensis

Pristeroceras

Aulopora enodis

Hesperorthis pyramidalis

Pristigenys

Aulopora necopina

Hesperotestudo crassiscutata

Pristimerica

Aulopora repens

Hesperotestudo turgida

Pristiograptus

Auloporella

Heteranomia

Pristiophorus

Aumelasia

Heterocolpites

Pristiophorus laevis

Auricula miliola

Heterocolpites paluster

Pristiophorus lanceolatus

Aurila

Heterocyathus aequicostatus

Pristis lathami

Auriptygma

Heterohelix

Pristocera

Auriptygma bulimina

Heterohelix globulosa

Pristognathus

Auriptygma fenestrata

Heterohelix striata

Pristognathus bighornensis

Auriptygma fortior

Heterohyus

Proacanthurus

Auritibicen

Heterohyus nanus

Proacanthurus bonatoi

Austinella

Heterolasma

Proacanthurus elongatus

Australina

Heterorthella

Proacanthurus ovalis

Australithax

Heterorthella precordillerana

Proacanthurus tenuis

Australoacaste

Heterorthella tondonensis

Proaracana

Australobollia

Heterorthina

Proaracana dubia

Australoneilo

Heterorthina cybele

Probillingsites

Australoneilo rossi

Heterorthina fairmountensis

Probolarina

Australonema

Heteroterma

Proboscina

Australonema varvarae

Heteroterma gabbi

Proboscisambon

Australophyllum

Heterotrypa

Procaimanoidea

Australopithecus afarensis

Heterotrypa compressa

Procariama

Australorbis

Hexacrinites

Procariama simplex

Australorbis spectabilis

Hexameroceras

Procarinaria

Australoscutellum

Hexaplex

Procarinaria zephyrina

Australostrophia

Hexaprotodon

Procarinatina

Austrobuccinum

Hexatractiella

Procassidulus

Austrobuccinum tuberosum

Hexatractiella nevadensis

Procephalaspis

Austrochlamys

Hexatractiella pseudonevadensis

Prochlorodius

Austrochlamys anderssoni

Hexedriocystis mimus

Prochlorodius ellipticus

Austrochlamys heardensis

Hexismia

Procladius

Austrocominella

Heyuncunoceras

Proclimacograptus

Austroficopsis

Hibbardella

Proclimacograptus angustatus

Austroficopsis seymourensis

Hibbertia costatus

Procolpochelys

Austroficopsis wimani

Hilgardia

Procolpochelys grandaeva

Austrofusus

Hillaepora

Proconchidium

Austrohinnites polyaktinos

Hillophyllum

Proconchidium brodeurensis

Austrosullivania

Hincksina flustroides

Proconchidium munsteri

Austrotoma

Hincksina loxopora

Procydnus

Austrovenus

Hindella

Procydnus mamillanus

Avalanchia

Hindella angustifrons

Procynodictis

Avalanchia pterocarina

Hindella cassidea

Procynodictis vulpiceps

Avalanchurus

Hindella crassa

Prodarwinia

Averrhoites

Hindella incipiens

Prodinapsis

Averrhoites affinis

Hindella kiaeri

Prodiodon

Aviacypris

Hindella prinstana

Prodiodon erinaceus

Avipeda

Hindella umbonata

Prodiodon tenuispinus

Avitograptus

Hindenites

Productorthis

Avitograptus avitus

Hindeodella equidentata

Productorthis aculeata

Axelella scalatella

Hindeodella excavata

Productus

Axestemys

Hindia

Proetus

Axestemys vittata

Hindia sphaeroidalis

Proetus (Bohemiproetus) magnicerviculus

Axinus

Hindsia (Nihonophos) magnifica

Proetus (Gerastos) subcarinatus

Axis

Hindsiclava caroniana

Proetus (Gerastos) sugiharensis

Axolasma

Hindsiella

Proetus (Proetus) subovalis

Axuolites

Hinnites ercolanianus

Proetus ainae

Aysegulina

Hippidion

Proetus alaricus

Aythya

Hippochrenes

Proetus concinnus

Azolla

Hippodiplosia miocenica

Proetus interjectus

Azygograptus

Hippohyus

Proetus latifrons

Babylonella

Hippomenella mucronelliformis

Proetus scoticus

Bacarella

Hipponix conicus

Proetus simus

Bactrocrinites

Hippopleurifera

Progalerus

Bactrocythara

Hippopleurifera surgens

Progonomys

Bactrotheca

Hippoporina

Progymnodon

Baculamonocolpites

Hippoporina canui

Progymnodon hilgendorfi

Baculamonocolpites hammenii

Hippoporina longidens

Proheliolites

Baculograptus

Hippoporina odontostoma

Proiridomyrmex

Baena

Hippopotamodon antiquus

Prokopicrinus

Baena affinis

Hippopotamus

Prolagus crusafonti

Baena arenosa

Hippotherium primigenium

Prolates

Baikitolites

Hippotragus

Promacrauchenia

Bailya

Hircinisca

Promacrauchenia antiqua

Bairdia subdeltoidea

Hiregiroceras

Promelocrinus

Bairdiella

Hiregiroceras costalatum

Promephitis

Bairdiocypris

Hiregiroceras verum

Promimomys

Bairdoppilata

Hirnantia

Promissum

Bajaichthys

Hirnantia noixella

Promissum pulchrum

Bajaichthys elegans

Hirnantia sagittifera

Promopalaeaster

Bajgolia

Hirneacrinus

Promopalaeaster granulosus

Balaenoptera bertae

Hirneacrinus cupellaeformis

Promopalaeaster wykoffi

Balanophyllia

Hirneacrinus perplanus

Promourlonia

Balanophyllia caulifera

Hiscobeccus

Promourlonia ambiqua

Balanophyllia desmophyllum

Hiscobeccus capax

Promourlonia biformis

Balanophyllia haleana

Hisingerella tenuis

Promourlonia durhamensis

Balanophyllia oppenheimi

Histiodella

Promourlonia furcata

Balcacarcinus

Hoegisphaera

Promyliobatis gazolae

Balcacarcinus attenuatus

Hogmochilina

Pronophlebia

Balcis

Holacanthia sytovae

Pronophlebia rediviva

Balizoma

Holcorpa

Pronothrotherium

Baltisphaeridium

Hollinella

Pronothrotherium mirabilis

Baltoniodus

Holmipterus

Propachynolophus

Baltoniodus variabilis

Holmophyllum

Propalaeotherium

Bambusites

Holocentropus

Propalaeotherium argentonicum

Bambusium

Holocystites

Propalaeotherium hassiacum

Bancroftina

Holocystites (Holocystites) alternatus

Propalaeotherium voigti

Bancroftina bouceki

Holocystites (Megacystites) abnormis

Proparaparchites

Banksieaeidites

Holocystites (Sepulticystis) spangleri

Propontocypris

Banksieaeidites arcuatus

Holocystites cylindricus

Propora

Banksieaephyllum

Holocystites salmoensis

Propotamochoerus devauxi

Banksieaephyllum cuneatum

Holocystites scutellatus

Propotamochoerus hysudricus

Baragwanathia

Holopea

Propristis

Baragwanathia longifolia

Holopea applanata

Propristis schweinfurthi

Baranogale

Holopea filosus

Propustularia

Baranogale helbingi

Holopea gigantea

Propylipollis

Barbarorthis

Holopea gracia

Propylipollis annularis

Barbarorthis laurentina

Holopea guelphensis

Propylipollis tenuiexinus

Barbarorthis porkuniensis

Holopea hubbardi

Propyrotherium

Barbatia (Barbatia) appendiculata

Holopea latens

Propyrotherium saxeum

Barbatia (Barbatia) bonaczyi

Holopea media

Prorastomus

Barbatia (Barbatia) inusitata

Holopea nicolettensis

Prorastomus sirenoides

Barbatia (Barbatia) lima

Holopea obsoleta

Proromma

Barbatia (Calloarca) submarylandica

Holopea rossbrookiensis

Proromma bregmops

Barbatia (Cucullaearca) cuculloides

Holopea scalariforme

Proscelidodon

Barbatia carolinensis

Holopea symmetrica

Proscelidodon gracillimus

Barbatia cliffensis

Holopea transversa

Proschizophoria

Barbatia gibba

Holopella

Prosiphneus licenti

Barbatia landesi

Holopella expandens

Prosolarium

Barbatia ludoviciana

Holopella gracilior

Prosolarium crenulata

Barbatulella

Holopella jovialis

Prosolarium deiopei

Barbierella

Holopella modesta

Prosolarium dominus

Barbotella

Holopella parvula

Prosolarium duslii

Barleeia

Holopella regularis

Prosolarium halei

Barnea

Holopella teres

Prosolarium incumbens

Barrandecirrus

Holophragma

Prosolarium limata

Barrandecirrus filiformis

Holophragma calceoloides

Prosolarium procerum

Barrandella

Holorhynchus

Prosolarium scalatum

Barrandella kindlei

Holorhynchus giganteus

Prosolarium striatissima

Barrandeocarpus

Holospira

Prosoptychus

Barrandeoceras

Holosteus

Prosoptychus globulus

Barrandeocrinus

Holotrachelus

Prosoptychus projectus

Barrandeograptus

Holotrachelus punctillosus

Prosoptychus rotunda

Barrandeolites

Holtedahlina

Prosoptychus sibiricus

Barrandina

Holtedahlina paraprostrata

Prosoptychus sphaera

Bartonia

Holtedahlina sinica

Prosoptychus wenlockensis

Baryconus

Holtedahlina suedica

Prospalax

Barysmilia

Holtedahlina sulcata

Prostegotherium

Barysmilia irregularis

Holtedahlina varsensis

Prostegotherium astrifer

Basilissa

Homacodon

Prosthenodon

Basopollis

Homacodon vagans

Prostrix

Bassipterus

Homalaspidella

Protacanthodes

Basslerites

Homalaspidella borealis

Protacanthodes nimesensis

Batavipusa

Homalonotus

Protacanthodes ombonii

Batavipusa neerlandica

Homalopoma wattsi

Protactis

Bathyarca

Homalostylops

Protactis wenlockensis

Bathylagus

Homiphoca

Protanastrophia

Bathylasma

Homiphoca capensis

Protanastrophia indistincta

Bathytoma

Homocrinus

Protanastrophia repanda

Bathytoma nonplicata

Homocrinus parvus

Protarabellites

Bathytormus

Homocystites

Protaraea

Batillaria

Homoeospira

Protaraea diffluens

Batocara

Homoeospira baylei

Protaraea procella

Batodonoides

Homoeospira evax

Protaraea richmondensis

Batostoma

Homoeospira fiscellostriata

Protaster

Batostoma gracilis

Homoeospirella

Protaster sedgwickii

Batostomella

Homoeospirella multicostata

Protaster stellifer

Baturria

Homogalax

Protatera

Bayania

Homola

Protathyris

Bdellacoma

Homola vanzoi

Protatlanta lissa

Bdellacoma vermiformis

Homopus

Protatlanta rotundata

Beatricea undulata

Homotherium

Protatrypa

Beaupreaidites

Homotrypa

Protatrypa malmoeyensis

Beaupreaidites elegansiformis

Homotrypa anticostiensis

Protatrypa thorslundi

Becscia

Homotrypa niagarensis

Protaxocrinus

Becscia carletona

Hoplocetus borgerhoutensis

Protaxocrinus paraios

Becscia scissura

Hoplophorus

Protaxocrinus sideros

Becsciecrinus

Hoplophractus

Proteacidites angulatus

Becsciecrinus adonis

Hoplostethus

Proteacidites subscabratus

Becsciecrinus groulxi

Hoplostethus mediterraneus

Proteacidites symphyonemoides

Beecheroscapha

Horderleyella

Proteacidites tenuiexinus

Beecheroscapha bispinosa

Horderleyella fragilis

Proteaciphyllum

Beilschmiedia

Horiostomella

Protelphidium

Beitaia

Horiostomella otiosa

Proteoceras

Bekkeromena

Hormocrinus

Proteorthis

Belemnospongia

Hormocrinus quebecensis

Protictis

Belemnospongia epiradiatus

Hormotoma acuminata

Protoaltingia

Belenopyge

Hormotoma antigonishensis

Protoaltingia hantonensis

Bellatara

Hormotoma articulata

Protobactrites

Bellerophon

Hormotoma centervillensis

Protobalistum

Bellerophon havliceki

Hormotoma concinnus

Protobalistum imperiale

Bellerophon ledburiensis

Hormotoma funata

Protobarleeia

Bellerophon miser

Hormotoma gigantea

Protobarleeia myersi

Bellerophon scaber

Hormotoma gracilis

Protocerauroides

Bellerophon shelbiensis

Hormotoma grayiana

Protochonetes

Bellerophon solitarius

Hormotoma insignis

Protochonetes elyensis

Belodella

Hormotoma latifasciatum

Protochonetes harricanensis

Belodella cooperi

Hormotoma piperi

Protochonetes ludloviensis

Belodella resima

Hormotoma tenuifilosa

Protochonetes minimus

Belodella silurica

Hormotoma teretiformis

Protochonetes piltenensis

Belodina

Hormotoma winnipegensis

Protochonetes striatellus

Belodina compressa

Hornera

Protocortezorthis

Belodina confluens

Horologinella

Protocrisina

Beloitoceras

Horologium

Protocrisina exigua

Beloitoceras amoenum

Horologium kokeni

Protocyathactis

Beloitoceras bucheri

Hostimex

Protocycloceras

Belonechitina

Hostinella

Protocypraedia

Beloptera

Howella

Protocytidium

Belosaepia

Howellella

Protocytidium elliottae

Belosepia

Howellella anglica

Protodichobune

Bembexia

Howellella crispa

Protodidelphis

Bembicosoma

Howellella elegans

Protoginglymostoma

Bembicosoma pomphicus

Howellella porcata

Protoginglymostoma ypresiensis

Bembidium

Howellella subinsignis

Protokionoceras

Benoistea

Howellites

Protokionoceras fessicancellatum

Benoistia

Howellites aenigmus

Protoleptostrophia

Benthosema

Huayqueriana

Protomegastrophia

Benthosema glaciale

Huayqueriana cristata

Protomegastrophia semiglobosa

Benthosema suborbitale

Huddlella

Protomya

Beraunia

Hudsonaster

Protopanderodus

Beraunia bifrons

Hudsonaster incomptus

Protopanderodus liripipus

Beraunia bohemica

Hudsonospongia

Protophocaena

Beraunia carens

Huerzelerimys

Protophocaena minima

Beraunia detersa

Huerzelerimys turoliensis

Protophragmoceras

Beraunia docens

Hughmilleria

Protophragmoceras erskinei

Beraunia elliptica

Hughmilleria wangi

Protophyllum

Beraunia indocilis

Huronia

Protopilophyllum

Beraunia placida

Huroniella

Protopterus

Beraunia querenda

Hustedograptus

Protopterus aethiopicus

Beraunia severa

Hustedograptus teretiusculus

Protoscolex

Beraunia verna

Huttagraptus

Protoscutella

Bergisuchus dietrichbergi

Huttagraptus acinaces

Protoscutella mississippiensis

Berhamniphyllum

Huttonechinus

Protospongia

Beringraja

Huttoniella

Protospongia columbiana

Beringraja binoculata

Hyaenictitherium

Protospongia conica

Bernayia

Hyala

Protostrix

Berolinella

Hyalostelia

Protosurcula

Berosus

Hyattidina

Protosurcula gabbi

Berouniconcha

Hyattidina congesta

Protosurcula gabbii

Berouniconcha filosum

Hybosorus

Prototaxites

Berouniconcha hesione

Hydnophora tenella

Prototomus

Beryx

Hydractinia

Protozebrasoma

Bessazoon

Hydrangea

Protozebrasoma bloti

Bessazoon gibbae

Hydrobia truncata

Protozeuga

Besselodus

Hydrobius

Protozeuga bicarinata

Besselodus borealis

Hydrochus

Protozyga

Betula

Hydrodamalis

Protrochiscolithus

Bevocastria

Hydrodamalis cuestae

Proturritella

Bevocastria conglobata

Hydroides

Proturritella historicum

Beyrichia

Hydromedusa

Provanna

Beyrichidiscus

Hydromedusa casamayorensis

Proviverra

Beyrichidiscus fecundatus

Hydropsyche

Proxapertites cursus

Bezanconia

Hymenophyllum

Proxapertites humbertoides

Bibio

Hyolithes

Proxapertites magnus

Bibiodes

Hyopsodus

Proxapertites operculatus

Bicarina

Hyopsodus lepidus

Proxapertites psilatus

Bicarina petilitornata

Hyopsodus paulus

Prumnopitys

Bickmorites

Hyotissa

Prunum calypsonis

Bicorbula gallicula

Hyotissa semipiana

Prunum christineladdae

Bicorbula kutchensis

Hyotissa semiplana

Prunum prunum

Bicrenucula

Hypechinus

Psammodulus

Bicrenucula elegans

Hyperammina

Psarodictyum

Bicuspina

Hyperoodon

Psarodictyum attenuatum

Biernatia curvata

Hypolagus ringoldensis

Psarolepis

Bifarina

Hypolagus tedfordi

Psephophorus

Bifurcium

Hypolophodon

Pseudaetobatus

Bigalea

Hypolophodon sylvestris

Pseudamiantis

Bigalea aviformis

Hypotodus

Pseudamplexus

Bighornia

Hypotodus verticalis

Pseudamussium clavatum

Bignonites

Hypsiptycha

Pseudarcella

Bikocrinus

Hypsiptycha anticostiensis

Pseudaristocystis

Billevittia

Hypsiptycha janea

Pseudhyrax

Billevittia adraini

Hyrachyus

Pseudhyrax eutrachytheroides

Billingsites anticostiensis

Hyrachyus agrarius

Pseudoaluco

Billingsites canadensis

Hyrachyus eximius

Pseudoamplexus

Billingsites manitoulinense

Hyrachyus modestus

Pseudoandonia

Bimuria

Hyracotherium

Pseudobelodella

Bimuria popovi

Hyracotherium leporinum

Pseudobelodella silurica

Bingeria

Hyrokybe

Pseudobelodina

Biomphalaria

Hyrokybe canadensis

Pseudobelodina dispansa

Biparetis

Hyrokybe copelandi

Pseudobelodina vulgaris

Biparetis caledonia

Hyrokybe hadnagyi

Pseudobirmanites

Biparetis paucirugosus

Hyrokybe julli

Pseudocarcharias

Biplex

Hyrokybe lenzi

Pseudocarcharias kamoharai

Birbalomys

Hysteroconcha rosea

Pseudocarcinus

Birbalomys sondaari

Hysterolites

Pseudocardium

Birkenia

Hystrichopsydrax

Pseudocheirurus

Birksfeldia

Hystrichopsydrax sandersi

Pseudocheirurus gomiensis

Birksfeldia circumplicata

Hystrichosphaeridium tubiferum

Pseudoclimacograptus

Bistolida

Hystricoceras

Pseudocochlespira

Bisulcata

Hystricoceras astraliformis

Pseudocolpomya miseneri

Bitrigonocardia

Hystricoceras lundgreni

Pseudocolpomya modioliformis

Bitrigonocardia diptera

Hystricoceras spinosum

Pseudoconchidium

Bitrigonocardia elegantula

Hystrix

Pseudoconchidium kozhimicum

Bittacus

Hystrix depereti

Pseudocrinites

Bittium deshayesi

Hystrix primigenia

Pseudocryptaenia

Bittium preussi

Iassus

Pseudocryptaenia lahuseni

Bittium yaguense

Ibanocrinus

Pseudocryptophyllum

Bittnereus

Iberosuchus

Pseudocycloceras

Bittnereus tumidus

Iberosuchus macrodon

Pseudocyrtodonta

Bivetopsia pachia

Icacinicarya

Pseudocyrtodonta obtusa

Blagraveia

Icaronycteris

Pseudodiploria clivosa

Blakeoceras

Ichiyamella

Pseudoduyunaspis

Blancomys

Ichiyamella subglobula

Pseudoduyunaspis bachuensis

Blarinella

Ichneumia

Pseudoemiliania

Blattella

Ichthyocrinus

Pseudoentomozoe

Bledius

Icriodella

Pseudofax

Blennius

Icriodella deflecta

Pseudofax ordinarius

Bleshidium

Icriodus

Pseudofletcheria

Bleshidium patellinum

Icriodus woschmidti

Pseudogrammatodon

Blethisa

Icriognathus

Pseudograptemys inornata

Boavus

Icriognathus cornutus

Pseudohastigerina

Bobellis

Icthyocrinus

Pseudohornera

Bobellis oliveri

Idalina

Pseudohornera diffusa

Bocchus

Iddingsella

Pseudohornera orosa

Bodacrinus

Idiocetus

Pseudoimperatoria

Bodacrinus columnus

Idioglyptus

Pseudoimperatoria media

Bodophyllum

Idioglyptus stigmatus

Pseudoimperatoria minima

Bodophyllum osmundense

Idioraphe

Pseudolabechia

Bodospira

Idiospira

Pseudolatirus

Bodospira kallholniensis

Idiostroma

Pseudolatirus yonabaruensis

Bodospira undulata

Idmidronea

Pseudolatochara

Boeuvia

Ignacius

Pseudoleda

Bohemograptus

Ikamauius

Pseudolingula

Bohemograptus bohemicus

Ikella

Pseudoliotia

Bohemoharpes

Ikelohyaena

Pseudoliva

Bohemoharpes naumanni

Ildraites

Pseudoliva vetusta

Bohemoharpes ovatus

Ilex

Pseudolivella

Bohemoharpes ungula

Ilexpollenites

Pseudolonchodina

Bohemoharpes vittatus

Ilexpollenites anguloclavatus

Pseudolonchodina expansa

Bohemoharpes wilkensii

Ilexpollenites clifdenensis

Pseudolyria

Boiotremus

Ilionia prisca

Pseudomalaxis

Boiotremus beraunensis

Illaenoides

Pseudomendacella

Boiotremus caelatus

Illaenoides abnormis

Pseudomeriones

Boiotremus distans

Illaenoides magnisulcatus

Pseudomeristina

Boiotremus incipiens

Illaenoscutellum

Pseudometula

Boiotremus kosovensis

Illaenoscutellum platiceps

Pseudomiltha gigantea

Boiotremus longitudinalis

Illaenus

Pseudomonoclimacis

Bolbaster

Illaenus (Parillaenus) dalecarlicus

Pseudoneptunea

Bolbibollia

Illaenus (Parillaenus) roemeri

Pseudoniscus

Bolbineossia

Illaenus avus

Pseudooneotodus

Bolbiprimitia

Illaenus dalecarlicus

Pseudooneotodus beckmanni

Bolbozoe

Illaenus linnarssoni

Pseudooneotodus bicornis

Bolcabalistes

Illaenus oviformis

Pseudooneotodus boreensis

Bolcabalistes varii

Illicium

Pseudooneotodus coniformis

Bolcathore

Illionia

Pseudooneotodus linguicornis

Boletina

Ilmarinia ponderosa

Pseudooneotodus mitratus

Bolicrinus

Ilyocypris gibba

Pseudooneotodus tricornis

Bolidium

Imbricatoceras

Pseudopachydictya

Bolis

Imbricatoceras subundulatum

Pseudoparrella

Bolivartherium

Imbricatocoelia

Pseudoperissolax

Bolivinita

Impagidinium

Pseudoperissolax blakei

Bolivinoides

Imperatoria irregularis

Pseudophaulactis

Bollia

Inapertisporites

Pseudopholidops

Bombacacidites

Incatella

Pseudophorus

Bombacacidites annae

Incatella trilirata

Pseudophorus cavus

Bombacacidites psilatus

Indaclor

Pseudophorus profundus

Bombacacidites soleaformis

Indaclor sellarius

Pseudophorus stuxbergi

Bonellitia

Indohyus

Pseudophragmina

Bonellitia (Admetula) paucivaricata

Indohyus indirae

Pseudophragmina advena

Bonnemaia

Infracoronia

Pseudophragmina clarki

Boops

Innapora

Pseudopilophyllum

Borealarges

Inocaulis

Pseudopilophyllum elegestum

Borealarges bucklandii

Inquisitor

Pseudoplasmopora

Borealarges calei

Insignia

Pseudoplegmatograptus

Borealarges fritillus

Insolentia

Pseudoproetus

Borealarges mikulicorum

Insolitignum

Pseudoprotathyris

Borealarges morrisoni

Insolitignum dissimile

Pseudoprotathyris infantilis

Borealarges nicoae

Interproetus

Pseudopus pannonicus

Borealarges patulus

Intexodictyon

Pseudorayella

Borealarges reedi

Intexodictyon avitum

Pseudoretiolites

Borealarges renodis

Intexodictyon confertum

Pseudorthograptus

Borealarges simplex

Intexodictyon laurenticum

Pseudosiobla

Borealarges tuckerae

Intexodictyon olevi

Pseudosphaerexochus

Borealarges variabilis

Intexodictyon perplexum

Pseudosphaerexochus cancrura

Borealarges warholi

Inversoceras

Pseudosphaerexochus conformis

Borealarges yulei

Involutisporonites

Pseudosphaerexochus granulatus

Borealis

Iodes

Pseudosphaerexochus roemeri

Borealis cristiformis

Ipsa

Pseudosphaerodon

Borelasma

Ipsa childreni

Pseudosphaerodon antiquus

Borelasma crassitangens

Iranospirifer

Pseudostephanocolpites

Boreocomitas

Iranospirifer qarabilensis

Pseudostrophochonetes

Boreotrophon triangulatus

Iredalea

Pseudotaphrus

Borhyaenidium

Iriartites

Pseudotectus

Borisella

Iridistrophia

Pseudotectus comes

Borkopleura

Isbergia

Pseudotettigonia

Borophagus hilli

Isbergia planifrons

Pseudotomus

Borsonia

Ischadites

Pseudotorinia

Bothrocorbula

Ischnacanthus

Pseudotriloculina

Bothrophoria

Ischnacanthus kingi

Pseudotupolichas

Botrychium

Ischyosporites gremius

Pseudotupolichas chicagoensis

Botryocrinus

Ischyrinia winchelli

Pseudotupolichas ornatus

Bouchardia

Ischyrodonta

Pseudotypotherium

Bouchardia antarctica

Ischyrodonta manitoulinensis

Pseudozonaria raymondrobertsi

Boucia

Ischyrodonta unionoides

Psilabrevitricolporites

Boucotides

Isechinus

Psilamonocolpites medius

Boucotinskia

Isechinus praecursor

Psilastephanocolpites

Boucotinskia elongata

Isectolophus

Psilastephanocolpites marginatus

Boucotinskia sulcata

Isectolophus latidens

Psilastephanocolpites verrucosus

Boucotspira lamellosus

Isfarispira

Psilastephanocolporites

Boucotspira wisbyensis

Isfarispira perlata

Psilastephanocolporites fissilis

Bourgueticrinus

Isfarispira septata

Psilastephanoporites

Bouskacrinus

Isiola

Psilasyncolporites

Bowanophyllum

Isis

Psilatricolpites acerbus

Bowanophyllum ramosum

Isistius

Psilatricolpites minutus

Bowdenatheca

Isistius trituratus

Psilatricolpites psilascabratus

Bowdenatheca jamaicensis

Isochilina

Psilatricolporites crassus

Bowdenia

Isocolus

Psilatriletes guaduensis

Bowenia

Isocolus sjogreni

Psiloconcha grandis

Bowenia eocenica

Isometopsallops

Psiloconcha subovalis

Braarudosphaera bigelowii

Isopora brueggemanni

Psilokirkbyella

Brachaelurus

Isorophus austini

Psilokirkbyella prominens

Brachidontes (Brachidontes) cowlitzensis

Isorophusella gutii

Psilophytites

Brachidontes alabamensis

Isorthis

Psyllipsocus

Brachiolites

Isorthis (Arcualla) arcuaria

Pteraspis

Brachyaspis

Isorthis (Arcualla) boreaina

Pterinea

Brachyaspis alacer

Isorthis (Arcualla) microscapha

Pterinea demissa

Brachyaspis leptaenarum

Isorthis (Ovalella) arndellensis

Pterinea mclearni

Brachycarcharias

Isorthis (Ovalella) mackenziei

Pterinea prolifica

Brachycarcharias koerti

Isorthis (Ovalella) natiscotekia

Pterinea waylandsmithi

Brachycarcharias lerichei

Isorthis crassa

Pterinopecten

Brachycythara gibba

Isorthis festiva

Pterocarya

Brachycythere

Isorthis loveni

Pterochaenia

Brachycythere jessupensis

Isorthis mediocra

Pterochitina

Brachyelasma estonicum

Isorthis parvulus

Pterodinium

Brachymimulus

Isorthis slitensis

Pterolucina

Brachyopterella

Isorthoceras

Pterolucina consobrina

Brachyopterus

Isorthoceras curvilineatum

Pteromogoplistes

Brachyphyllia

Isorthoceras dalecarlense

Pteromogoplistes grandis

Brachypogon

Isorthoceras elongatocinctum

Pteromogoplistes smithii

Brachyprion

Isorthoceras junceum

Pteronitella

Brachyprion (Brachyprion) semiglobosa

Isorthoceras suave

Pteronites

Brachyprion (Eomegastrophia) philomena

Isorthoceras subcostatum

Pterophrentis

Brachyprion (Erinostrophia) walmstedti

Isorthoceras wahlenbergi

Pteropora

Brachyprion (Protomegastrophia) profunda

Isospira

Pteropora pennula

Brachyprion arenaceus

Isospira lepida

Pterospathodus

Brachyprion attenuata

Isospira reticulata

Pterospathodus amorphognathoides

Brachyprion compressa

Isostylomys

Pterospathodus celloni

Brachyprion kurzemensis

Isostylomys laurillardi

Pterospathodus eopennatus

Brachyprion leda

Isotelus

Pterospathodus pennatus

Brachyprion robustus

Isotemnus

Pterospathodus rhodesi

Brachyrhizomys

Isotemnus primitivus

Pterospermella

Brachystomia

Isovella

Pterosphenus

Brachytherium

Ispharina

Pterosphenus biswasi

Brachytomaria

Ispharina sulcifera

Pterosphenus kutchensis

Brachytomaria kindlei

Isselicrinus

Pterosphenus schucherti

Brachytomaria papillosa

Istorinus

Pterostichus (Lenapterus) vermiculosus

Brachytomaria turricula

Istorinus erectus

Pterostichus (Melanius) corvinus

Brachyuranochampsa

Isurolamna

Pterostichus costatus

Bracon

Isurus

Pterostoma

Bracteoleptaena

Isurus paucus

Pterotheca anticostiana

Braggicarpilius

Isurus praecursor

Pterotheca avirostris

Braggicarpilius marginatus

Ithycythara elongata

Pterotheca hispanica

Brahmacrinus

Ivanopleura

Pterotheca mullochensis

Bramatherium

Izikoziphius

Pterotheca multidecorata

Branchioplax parva

Jacquhermania

Pterotheca trimerelloides

Branchioplax sulcata

Jacquhermania duponti

Pterothrissus

Brevibelus

Jaekelotodus

Pterotriamescaptor

Brevibelus breviformis

Jaekelotodus robusta

Pterotyphis (Pterotyphis) pinnatus

Brevilamnulella

Jaekelotodus trigonalis

Pterygocythereis

Brevilamnulella kjerulfi

Jahnia

Pterygometopus

Brevilamnulella laevis

Jahnia pelmen

Pterygometopus schmidti

Brevilamnulella thebesensis

Jamoytius

Pterygotus

Brevilamnulella umbosulcata

Janeia

Pterynotus

Breviodon

Jania

Pterynotus (Pterynotus) stenzeli

Breviseptum

Jania mengaudi

Ptilillaenus

Brevitricolpites

Jania nummulitica

Ptilodictya

Brevitricolpites microechinatus

Janicula

Ptilodictya bifurcata

Brevitricolpites variabilis

Janicula potens

Ptilodictya canadensis

Briantelasma

Janiomya

Ptilodictya ensiformis

Brianurus

Janiopsis

Ptilodictya flabellata

Brianurus jeffersoni

Janius

Ptilodictya flagella

Brockocystis

Janius barrandi

Ptilodictya gladiola

Brockocystis nodosaria

Janius exsul

Ptilodictya lanceolata

Broeggeria

Janius nobilis

Ptilodictya sulcata

Brongniartella

Janius occidentalis

Ptilograptus

Brongniartella platynota

Janussenia

Ptiloporella

Brongniartella robusta

Janussenia orangense

Ptilotrypa

Bronteopsis

Japonactaeon

Ptomaspis

Bronteopsis concentrica

Japonactaeon punctostriata

Ptomaspis canadensis

Brooksina

Japonoscutellum

Ptychatractus

Brotia

Japonoscutellum geniculatum

Ptychatractus interruptus

Bryantodus

Japonoscutellum japonicum

Ptycheulimella

Brychaetus

Japonoscutellum tunidum

Ptychocaulus

Bubo

Jarovathyris

Ptychocaulus bivittata

Bubovicus

Jaspidella sanctidominici

Ptychocerithium

Bubovicus tarda

Jasus

Ptychocrinus

Bucanella

Jenneria gabbiana

Ptychocrinus mullochillensis

Bucania

Jeppssonoceras

Ptychoglyptus

Bucania bellapuncta

Jeppssonoceras concentratum

Ptychoglyptus ingenuus

Bucania groenlandica

Jezercia

Ptychomphalina

Bucania robusta

Jezercia rongi

Ptychomphalina inexpectata

Bucania simulatrix

Jezercia wrighti

Ptychomphalina regulosa

Bucania squamosus

Jifarahpora

Ptychophyllum

Bucania stephnae

Jifarahpora libyensis

Ptychopleurella

Bucania stigmosa

Jingshanella

Ptychopleurella angulaticostata

Bucanopsis

Jingshanella surculosa

Ptychopleurella bouchardi

Bucanopsis gemma

Jinonicella

Ptychopleurella emarginata

Bucanopsis latevittatus

Jinonicella kolebabai

Ptychopleurella erecta

Bucanopsis trisinuata

Johntempleia

Ptychopleurella lamellosa

Bucanopsis volgulica

Johntempleia pamae

Ptychopleurella lenzi

Bucanospira

Joldagiroceras

Ptychopleurella mediocostata

Bucanospira expansa

Joldagiroceras gyratum

Ptychopleurella multicostata

Bucanospira fractum

Joleaudella

Ptychopleurella transversa

Bucanospira tuba

Joleaudella mansuyi

Ptychopleurella twenhofeli

Bucardium

Joleaudella perstriatus

Ptychopleurella uniplicata

Buccinaria

Joleaudella yimgantauensis

Ptychopteria

Buccinofusus

Jolvia

Ptychosphaera

Buccinulum (Euthria) corneum

Jonesea

Ptychosphaera carinata

Buccitriton

Jonesea cocksi

Ptychosphaera constricta

Buccitriton sagenum

Jonesea grayi

Ptychosphaera ouralicus

Bucella

Jonesea undulata

Ptychospirina

Buchema

Jonesina

Ptychospirina senaria

Buchiola

Jonesites

Ptyocephalus

Bucucrinus

Jorgechlamys

Puffinus tedfordi

Bucucrinus isotaloi

Jorgechlamys centralis

Pugnus

Bucucrinus saccus

Jovacrinus

Pugnus lachrimula

Buffalopterus

Jovacrinus clarki

Pullenia

Bulbosohnia

Jovacrinus jugum

Pullenia quinqueloba

Bulbosohnia bolboformis

Jovacrinus spinosus

Pulleniatina praecursor

Bulimina ovata

Jovellania

Pulleniatina primalis

Buliminella

Joviatrypa

Punctacheilinella

Bulimus

Joviatrypa brabyla

Punctacheilinella macropunctata

Bulimus lutescens

Jugiaster

Punctatisporites

Bulla cylindroides

Jugiaster speciosus

Punctoprimitia

Bullaria

Juglandicarya

Pupa

Bullatella

Juglans

Pupillaria pupilla

Bullia

Jujubinus

Puppigerus

Bullia altilis

Jujuyops

Puppigerus camperi

Bullinella

Juliacorbula

Puriana

Bumastoides

Juliacorbula aequivalvis

Purpura (Stramonita) angulata

Bumastus

Juncitarsus

Pusillina

Bumastus (Bumastella) aspera

Juncitarsus gracillimus

Pustulocystis

Bumastus (Bumastella) bipunctatus

Junggarella

Pustulocystis ornatissimus

Bumastus (Bumastella) spiculus

Jupiterella

Pustulocystis pentax

Bumastus (Bumastus) glomerosus

Jupiterella eumorpha

Pycnactis

Bumastus (Bumastus) subquadratus

Juvemys

Pycnactoides

Bumastus agmakros

Juvemys labarrerei

Pycnodictyon

Bumastus barriensis

Kailia

Pycnodonta rarilamella

Bumastus cuniculus

Kailia (Parakailia) lata

Pycnodonte (Pegma) bajaensis

Bumastus dayi

Kailiceras

Pycnodonte percrassa

Bumastus graftonensis

Kakanuiella

Pycnodus

Bumastus insignis

Kakanuiella hedleyi

Pycnodus bicresta

Bumastus ioxus

Kalamopsis

Pycnodus toliapicus

Bumastus kattoi

Kalimnasphaera

Pycnolithus

Bumastus niagarensis

Kalissus

Pycnomphalus

Bumastus nudus

Kalissus nitidus

Pycnomphalus acutus

Bumastus sakoi

Kallodentis

Pycnomphalus colemani

Bumastus tenuis

Kallodentis rhytistemma

Pycnomphalus concurrens

Bumastus vulsus

Kalmia

Pycnomphalus helicites

Bunodes

Kalpinolepis

Pycnomphalus immaturus

Buntonia

Kalpinolepis tarimensis

Pycnomphalus inflatus

Buprestis

Kamaena

Pycnomphalus obesus

Buridrillia

Kambara

Pycnomphalus placidus

Burmeisteria

Kampecaris

Pycnosaccus

Burnhamia

Kampella

Pycnostylus

Burnhamia daviesi

Kampella guttula

Pycnotrochus

Bursa

Kanabinocrinus

Pycnotrochus christiei

Bursa corrugata

Kannathalepis

Pycnotrochus prosper

Bursa grayana

Kannathalepis milleri

Pycnotrochus viator

Bursachitina

Kapalmerella

Pygmaepterys germainae

Bursericarpum

Kapalmerella mortoni

Pygodus

Burtinella

Kapalmerella ranikoti

Pygolfia

Burtonella

Karreriella

Pygolfia nina

Burtonella emarginata

Kaseiella

Pygostolus

Buskopora

Kaseiella laudabilis

Pyramidella

Busycon

Kassinella

Pyramidella etheringtoni

Buthotrephis

Kassinella (Kassinella) shiyangensis

Pyramimitra

Buthotrephis gracilis

Kastorcrinus

Pyramiodontherium

Butovicella

Kastorcrinus chattertoni

Pyrazus indicus

Butovicella migrans

Katastrophomena

Pyrenomoeus cuneatus

Buxolestes

Katastrophomena (Costistrophomena) magna

Pyrgo

Byronoceras

Katastrophomena (Katastrophomena) penkillensis

Pyrgocystis

Byrsolopsina

Katastrophomena antiquata

Pyrgocystis cylindrica

Byssonychia borealis

Katastrophomena maxima

Pyrgocystis sulcata

Byssonychia grandis

Katastrophomena modesta

Pyrgocystis varia

Byssonychia radiata

Katastrophomena parvicardinis

Pyrgopolon(Pyrgopolon)septemsulcata

Byssonychia richmondensis

Katastrophomena penkillensis

Pyricythereis

Bythinella

Katastrophomena radiireticulata

Pyrula dussumieri

Bythocypris

Katastrophomena scabrosa

Pythina

Bythocypris mayeri

Katastrophomena scotica

Qianbeilites

Bythopora

Katastrophomena woodlandensis

Qianomena

Bythotrephis

Katastrophomena zheganensis

Qianomena costata

Cadudium

Katherinella

Qianomena unicosta

Caecum

Katherinella arnoldi

Qilinyu

Caecum (Caecum) regulare

Katoporodus

Qilinyu rostrata

Caecum anellifer

Katoporodus timanicus

Quadratomus

Caesariella

Kayatia

Quadricarina

Caesia californiana

Kayoceras

Quadricarina attava

Caestocorbula gujaratensis

Kayserella

Quadricarina cancellata

Cainocrinus

Kelletia kelletii

Quadricarina glandiformis

Caladiosoma

Kelliella

Quadricarina humillima

Caladiosoma miocenica

Kenophyllum

Quadricarina scutulata

Calamagras

Kenostrychus

Quadricarina senilis

Calamopora alveolaris

Kenostrychus clementsi

Quadricollina

Calamospora

Kentisuchus

Quadrifarius

Calamus daemonorops

Kentronetes

Quadrilatera

Calapoecia

Kenyemys

Quadrimorphina

Calapoecia huronensis

Kenzieana

Quadrithyris

Calathium

Kenzieana cardiopsis

Quadrula

Calcaribeyrichia

Ketophyllum

Quadrum

Calcarina

Kettneraspis

Quadrum gartneri

Calceocrinus

Kettneraspis copelandi

Quasiaulacera

Calceocrinus gamachicus

Kettneraspis ramskoeldi

Quasiaulacera occidua

Calciosolenia

Kettneraspis wrightae

Quasilaeviranina

Calicantharus fortis

Kettnerites

Quasilaeviranina ombonii

Caligodinium

Khalfinaea

Quasistrophonella

Calippus hondurensis

Khirtharia

Quepora

Calisius

Khirtharia inflatus

Quercygale

Calisius balticus

Khoikhoicetus

Quinquecosta

Callianassa alpha

Kiaeria

Qurliqnoria

Callianassa beta

Kiaeromena

Quyania

Callianassa stimpsoni

Kiaeromena (Kiaeromena) grandis

Quyania chowi

Callianassa ulrichi

Kiaeromphalus

Raadshovenia

Calliax

Kiaeromphalus kristianiensis

Rabuloproetus

Callicylix eocenicus

Kiaeromphalus undiferus

Racemonocolpites

Calliocrinus

Kiaeropterus

Racemonocolpites facilis

Calliops

Kiangsuaspis

Racemonocolpites racematus

Calliostoma (Calliostoma) decipiens

Kibenikhoria

Racemonocolpites romanus

Calliostoma (Elmerlinia) olssoni

Kiesowia

Radiaspis

Calliostoma ligatum

Kinaschukoceras

Radiastrea

Calliovarica

Kindleoceras

Radiatodonta

Callipentamerus

Kindleoceras reversatum

Radiodiscus

Callista (Callista) elegans

Kindleoceras triangulare

Radiolichas

Callista (Microcallista) proxima

Kinnella

Radiolichas davedaviesi

Callocardia

Kinnella laurentiana

Radiolichas guttatus

Callocardia (Agriopoma) catharia

Kinnella medlicotti

Radiolichas raydaviesi

Callocardia (Nitidavenus) nitidula

Kionelasma

Radiotrypa

Callocladia

Kionoceras

Radiotrypa gothica

Callocystites

Kionoceras coralliforme

Radiurus

Callograptus

Kionoceras doricum

Radiurus adraini

Callolongchaeus

Kionoceras muyagirum

Radix dilatata

Calloporella

Kionoceras virgatum

Radix subbullata

Calloporella harrisi

Kirkbyella

Radnoria

Calloporina

Kirkidium

Radnoria carlsi

Callorhinchus

Kirkidium knighti

Radnoria humillima

Callorhinchus stahli

Kirkidium sculptum

Radnoria syrphetodes

Callosciurus

Kirkirhynchus

Raeta

Callucina (Callucina) squamula

Kirkirhynchus reesidei

Raeta hasletti

Callucinella

Kirkospira

Raetomya

Calocyclas

Kirkospira glacialis

Raetomya schweinfurthi

Calocyclas hispida

Kirkospira tongassensis

Rafanoglossa

Calocycloma

Kirkospira vitellia

Rafinesquina

Calocyrtoceras

Kitakamiia

Rafinesquina alternata

Calocyrtocerina

Kitakamiphyllum

Rafinesquina latisculptilis

Calomyscus

Kjaerina

Rafinesquina mesicosta

Calomyscus minor

Kjaerina orvikui

Rafinesquina percensis

Calophyllum amalloides

Kjaerina poljensis

Rafinesquina ponderosa

Calorebama

Kjerulfina

Rafinesquina pseudoloricata

Calorebama dilleri

Klakesia

Rafinesquina relicua

Calorhadia (Calorhadia) pharcida

Klamathastraea

Rafinesquina stropheodontoides

Calorhadia bella

Klamathastraea dilleri

Rafinesquina ultrix

Calostylis

Kleidionella

Rafinesquina urbicola

Calostylis concavifundatus

Kloedenella

Rakverella

Calostylis luhai

Knightia andreae

Rakverina

Calotrophon

Kobayashiconcha consolans

Rakverina oanduensis

Calpensia nobilis

Kobus

Ralfinella

Calpichitina

Kobus porrecticornis

Ramochitina

Calpichtina

Kobus presigmoidalis

Ramphonotus

Calycites

Kochoceras

Ramphonotus minax

Calycites mikanoides

Kockelella

Ramulophyllum

Calycocoelia

Kockelella amsdeni

Ranella

Calycocoelia micropora

Kockelella corpulenta

Ranella domenginica

Calycocoelia typicalis

Kockelella manitoulinensis

Ranellina

Calymene

Kockelella ortus

Ranellina pilsbryi

Calymene (Gravicalymene) angustior

Kockelella patula

Rangia

Calymene ansensis

Kockelella ranuliformis

Ranikothalia

Calymene barnesi

Kockelella stauros

Raniliformis

Calymene blumenbachi

Kockelella variabilis

Raninellopsis

Calymene blumenbachii

Kockelella walliseri

Raninoides

Calymene breviceps

Kockelellamecdup

Raninoides treldenaesensis

Calymene celebra

Kodonophyllum

Raninoides vaderensis

Calymene clavicula

Kodymites

Raninoides washburnei

Calymene frontosa

Kodymites vulcanus

Ranularia

Calymene gamachei

Kogia

Rapana

Calymene hadyardensis

Kohatius

Rapana bulbosa

Calymene latigenata

Kohatius coppensi

Raphicerus

Calymene mimaspera

Koigia

Raphiophorus

Calymene minimarginata

Kokenospira

Raphispira

Calymene nasuta

Kokenospira credibilis

Raphispira plena

Calymene niagarensis

Kokomopterus

Raphistoma

Calymene nowlani

Kolihaia

Raphistomina

Calymene orthomarginata

Konobelodon

Raphitoma

Calymene polgari

Kooptoonocrinus

Raractocetus

Calymene retrorsa

Kopaninoceras

Raskyella

Calymene ubitquitosus

Kopaninoceras dorsatoides

Rastrites

Calymenella

Kopaninoceras jucundum

Raulinia

Calymenella bayani

Kopaninoceras thyrsus

Ravozetina

Calyptaulax

Kordosia

Ravozetina honorata

Calyptaulax glabella

Kordosia topali

Receptaculites

Calyptraea (Trochita) aperta

Koremagraptus

Recilites

Calyptraea (Trochita) trochiformis

Kosoidea

Recilites sylvestris

Calyptraea diegoana

Kosovina

Rectalloides

Calyptraphorus

Kosovina peeli

Rectella

Calyptraphorus velatus

Kosovoceras

Rectograptus

Camargomendesia

Kosovopeltis

Rectograptus abbreviatus

Camarocrinus

Kosovopeltis allaarti

Rectograptus amplexicaulis

Camarotoechia

Kosovopeltis andersoni

Rectograptus truncatus

Camarotoechia bimesiornata

Kosovopeltis angusticostata

Recurvaster

Camelops

Kosovopeltis insularis

Redstonia

Camerella

Kozelconcha

Redstonia buskasi

Cameroceras

Kozelconcha lipara

Redstonia tercierae

Cameroceras regulus

Kozelconcha obesa

Redstonia visbyensis

Cameroceras turrisoides

Kozlenia

Redunca

Campages

Kozlowskiellina

Reedops

Campanile

Kozlowskiellina deltidialis

Regnellidium

Campanile giganteum

Kozlowskiellina strawi

Reimanophyllum

Campanilopa

Kozlowskites

Reithroparamys

Campanilopa dilloni

Kozlowskites gracilis

Reithroparamys delicatissimus

Campograptus

Kraglievichia

Remopleurides

Campograptus harpago

Kramadolops

Remopleurides emarginatus

Campograptus lobiferus

Kramadolops mayoi

Remopleurides minimus

Camponotus

Krameriella

Remopleurides nikolaiseni

Campophyllum

Krameriella hornyi

Renalcis

Camptodictyon

Kraussina

Renalia

Camptodictyon penefastigiatum

Kraussina rubra

Rennensismilia complanata

Camptolithus

Krinocrinus

Replicoskenidioides

Campylocythere

Kromtitis

Reptaria

Cancellaria

Kromtitis koberiformis

Resserella

Cancellaria (Cancellaria) guppyi

Kromtitis levigatus

Resserella basalis

Cancellaria (Cancellaria) harrisi

Kromtitis pentagonalis

Resserella canalis

Cancellaria (Cancellaria) juncta

Kromtitis subovatus

Resserella elegantula

Cancellaria (Cancellaria) mauryae

Ktenoura

Resserella impensa

Cancellaria (Cancellaria) metuloides

Kullervo

Resserella matutina

Cancellaria pilula

Kullervo complectens

Resserella praeclara

Cancellaria tapeina

Kulumbella

Resserella sabrinae

Cancelrana

Kulumbella xacta

Reteograptus

Cancer

Kummelonautilus

Reteograptus geinitzianus

Cancer fissus

Kungejophyllum

Reteporina

Cancer irroratus

Kungejophyllum ajagusensis

Retibrevitricolpites

Cancris

Kunmunella

Retibrevitricolpites catatumbus

Candeina

Kunmunella kalakotensis

Retibrevitricolpites triangulatus

Candeina nitida

Kunmunella transversa

Retibrevitricolporites

Candona neglecta

Kuphus

Retibrevitricolporites grandis

Canis

Kuphus fistula

Retibrevitricolporites speciosus

Canis edwardii

Kuresaaria

Reticularia

Canistrocrinus

Kurnamena rugosoides

Reticulariopsis

Canistrocrinus richardsoni

Kurtziella (Kurtziella) stenotella

Reticulatrypa

Canistrocrinus typus

Kylixocrinus

Reticulograptus

Cannapora

Kyphophyllum

Retidiporites

Cantharus

Kyphophyllum greggi

Retidiporites agilis

Cantius

Kyphophyllum schmidti

Retiheterocolpites

Cantrillia

Kyreocrinus

Retiheterocolpites tertiarius

Capelliniella

Labechia

Retilaskeya

Caperea

Labechia conferta

Retimonocolpites retifossulatus

Capnophyllum

Labechia prima

Retiolites

Capparidispermum

Labechiella

Retiolites geinitzianus

Capra

Labechiellata

Retipilina

Capulus

Labechiina

Retipilina knighti

Capulus haliotis

Labechiina arguta

Retisacculus

Carabus (Aulonocarabus) truncaticollis

Labrospira

Retiskenea

Carcharias atlasi

Labyrinthites

Retistephanocolpites angeli

Carcharias cuspidatus

Labyrinthodictyon

Retistephanocolpites fossulatus

Carcharocles

Labyrinthodictyon angulosum

Retistephanocolpites minutus

Carcharodon

Labyrinthosphaera

Retistephanocolporites

Carcharodon arnoldi

Labyrinthosphaera macdonaldi

Retistephanocolporites festivus

Carcinosoma

Lacazella

Retistephanoporites

Carcinosoma scoticus

Lacazella caribbeanensis

Retisyncolporites

Cardavia

Laccobius

Retisyncolporites aureus

Cardavia cathleenae

Laccophilus

Retitrescolpites

Cardavia hafi

Laccoprimitia

Retitrescolpites baculatus

Cardavia stefani

Laceripora

Retitrescolpites irregularis

Cardiola

Lachnopodus

Retitrescolpites saturum

Cardiola bohemica

Lacinia

Retitricolpites absolutus

Cardiola conformis

Lacrimasporonites

Retitricolpites adeptus

Cardiola donigala

Lacunaria

Retitricolpites adultus

Cardiola geminans

Lacunaria striata

Retitricolpites amapaensis

Cardiola nina

Lacunella

Retitricolpites antonii

Cardiola signata

Lacunoporaspis

Retitricolpites bonus

Cardiolinka

Ladacrinus

Retitricolpites clarensis

Cardiolita bohemica

Ladacrinus asynaptos

Retitricolpites conciliatus

Cardiolita conformis

Ladakhipollenites

Retitricolpites constrictus

Cardiolopsis

Laeogyra

Retitricolpites maledictus

Cardiomya (Bowdenia) distira

Laeogyra arvetensis

Retitricolpites minutus

Cardiomya (Cardiomya) islahispaniolae

Laeogyra gracilis

Retitricolpites perditus

Cardiomya dolabraeformis

Laevibuccinum

Retitricolpites simplex

Cardiophorus

Laevicarcinus

Retitricolporites chubutensis

Cardita alticostata

Laevicarcinus lioyi

Retitricolporites equatorialis

Cardita mutabilis

Laevicardium venustulum

Retitricolporites finitus

Carditella

Laevicardium vitellinum

Retitricolporites marianis

Cardium

Laevicyphomena

Retitricolporites saskiae

Cardium (Laevicardium) unicolor

Laevigatosporites discordatus

Retitriporites dubiosus

Cardium (Orthocardium) porulosum

Laevigatosporites tibuensis

Retitriporites federicii

Cardium bouei

Laeviranina

Retizitteloceras

Cardium nanum

Laeviranina fabianii

Retizitteloceras rarum

Caretta

Laeviranina treldenaesensis

Retrophyllum

Carex

Lagarograptus

Retrophyllum spiralifolium

Caribachlamys jungi

Lagena sulcata

Retrorsirostra

Caricella

Lagena vulgaris

Retrorsirostra carleyi

Caricella demissa

Lagenammina

Retusa (Cylichnina) galba

Caricella pyruloides

Lageniocrinus

Retusa galba

Caricoidea

Lagenipora tuba

Retusotriletes

Carinariopsis

Lagenochitina

Retzia

Carinaropsis

Lagenorhynchus

Retziella

Carinastarte

Lahillia

Reuschella

Carinodrillia elocata

Lalax bouchardi

Reuschella inexpectata

Carinodrillia felis

Lambeoceras

Reuschia

Carinophyllum

Lambeophyllum

Reussella

Carnalpia

Lambis goniophora

Revalotrypa

Carneithyris

Lamellaeoporella

Revalotrypa honguedensis

Carneithyris aequivalvis

Lamelliconcha

Reveroides

Carniodus

Lamelliconcha parinensis

Reversocypris

Carniodus carnulus

Lamelliconchidium

Rexroadus

Carolia

Lamelliconchidium micropleura

Rexroadus kentuckyensis

Carolia (Parinomya) parinensis

Lamna apiculata

Rexroadus nathani

Carpilius

Lamna bronnii

Rhabdelasma

Carpilius petreus

Lamna macrota

Rhabdochitina

Carpinus

Lamna vincenti

Rhabdocyclus

Carpocrinus

Lamontopterus

Rhabdolithis

Carpolithus arnensis

Lampadena

Rhabdomastix

Carpolithus gardneri

Lampadena urophaos

Rhabdoporella

Carpospongia

Lampadosocrinus

Rhabdoporella catenularia

Carpospongia castanea

Lamprophyllum

Rhabdoporella glomerata

Carpospongia globosa

Lamproscutellum

Rhabdostropha

Carya

Lampterium

Rhabdostropha cancellata

Carya antiquorum

Lampterocrinus

Rhabdostropha grindrodii

Caryocaris

Lamptonium

Rhabdostropha leijiatunensis

Caryocaris cedarbergensis

Lanarkia

Rhabdostropha minuta

Caryocorbula caribaea

Lanarkia horrida

Rhabdostropha quinquecincta

Caryocorbula complicata

Lanarkopterus

Rhabdotetradium

Caryocorbula contracta

Lanceolatites

Rhabdotetradium frutex

Caryocorbula parilis

Lanceomyonia

Rhactomena

Caryocorbula striata

Langeites

Rhagapodemus

Caryocorbula urumacoensis

Langtonia bisulcata

Rhagasostoma

Caryocrinites

Lannea

Rhamnospermum

Caryocrinites ornatus

Lanthanaster

Rhamnospermum bilobatum

Caryocystites

Lanthanaster cruciformis

Rhamnus

Caryocystites thorslundi

Lapparia

Rhamphostomella

Caryogyps

Lapworthura

Rhaphidograptus

Caryogyps chattertoni

Lapworthura miltoni

Rhaphidograptus toernquisti

Caryogyps grayi

Laquethiris

Rhaphidophyllum

Caryospongia