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Atlas of Ordovician Life
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Arthropoda
Ostracoda
Palaeocopida
Drepanella
Drepanella richardsonia
Trilobita
Phacopida
Calymenidae
Flexicalymene
Flexicalymene granulosa
Flexicalymene meeki
Cheiruridae
Ceraurus
Ceraurus milleranus
Asaphida
Asaphidae
Isotelus
Isotelus gigas
Isotelus maximus
Trinucleidae
Cryptolithus
Cryptolithus tesselatus
Lichida
Lichidae
Amphilichas
Amphilichas shideleri
Odontopleuridae
Acidaspis
Acidaspis cincinnatiensis
Ptychopariida
Olenidae
Triarthrus
Triarthrus beckii
Brachiopoda
Brachiopod Morphology
Craniata
Craniida
Craniidae
Petrocrania
Petrocrania scabiosa
Philhedra
Philhedra laelia
Craniopsida
Craniopsidae
Craniops
Craniops cincinnatiensis
Lingulata
Lingulida
Trematidae
Trematis
Trematis millepunctata
Schizocrania
Schizocrania filosa
Pseudolingulidae
Pseudolingula
Rhynchonellata
Orthida
Dalmanellidae
Dalmanella
Dalmanella emacerata
Cincinnetina
Cincinnetina meeki
Cincinnetina multisecta
Draboviidae
Pionodema
Pionodema bellula
Glyptorthidae
Glyptorthis
Glyptorthis insculpta
Heterorthidae
Heterorthina
Heterorthina fairmountensis
Plectorthidae
Hebertella
Hebertella alveata
Hebertella frankfortensis
Hebertella occidentalis
Plectorthis
Plectorthis fissicosta
Plectorthis plicatella
Platystrophiidae
Vinlandostrophia
Vinlandostrophia acutilirata
Vinlandostrophia annieana
Vinlandostrophia clarksvillensis
Vinlandostrophia colbiensis
Vinlandostrophia cypha
Vinlandostrophia hopensis
Vinlandostrophia laticosta
Vinlandostrophia moritura
Vinlandostrophia ponderosa
Plaesiomyidae
Austinella
Austinella scovillei
Plaesiomys
Plaesiomys subquadratus
Retrorsirostra
Retrorsirostra carleyi
Atrypida
Anazygidae
Catazyga
Catazyga headi
Zygospira
Zygospira cincinnatiensis
Zygospira kentuckiensis
Zygospira modesta
Rhynchonellida
Orthorhynchulidae
Orthorhynchula
Orthorhynchula linneyi
Rhynchotrematidae
Hiscobeccus
Hiscobeccus capax
Lepidocyclus
Lepidocyclus perlamellosum
Rhynchotrema
Rhynchotrema dentata
Strophomenata
Strophomenida
Strophomenidae
Strophomena
Strophomena concordensis
Strophomena nutans
Strophomena planoconvexa
Strophomena planumbona
Strophomena vetusta
Tetraphalerella
Tetraphalerella neglecta
Holtedahlina
Holtedahlina sulcata
Sowerbyellidae
Sowerbyella
Sowerbyella rugosa
Eochonetes
Eochonetes clarksvillensis
Rafinesquinidae
Rafinesquina
Rafinesquina alternata
Rafinesquina nasuta
Rafinesquina ponderosa
Leptaena
Leptaena richmondensis
Bryozoa
Bryozoan Vocabulary
Zooecial Aperture Shape
Stenolaemata
Cystoporata
Ceramoporella
Ceramoporella flabellata
Constellaria
Constellaria emaciata
Constellaria fischeri
Constellaria florida
Constellaria polystomella
Constellaria teres
Crepipora
Nicholsonella
Cryptostomata
Arthrostylus
Escharopora
Escharopora falciformis
Escharopora hilli
Escharopora maculata
Escharopora pavonia
Pachydictya
Paleschara
Ptilodictya
Cyclostomata
Corynotrypa
Corynotrypa delicatula
Corynotrypa inflata
Cuffeyella
Cuffeyella arachnoidea
Trepostomatida
Aisenvergiidae
Eridotrypa
Eridotrypa aedilis
Eridotrypa briareus
Amplexoporidae
Amplexopora
Amplexopora septosa
Rhombotrypa
Rhombotrypa quadrata
Rhombotrypa subquadrata
Atactotoechidae
Cyphotrypa
Leptotrypa
Leptotrypa minima
Leptotrypa ornata
Batostomellidae
Batostomella
Batostomella gracilis
Halloporidae
Hallopora
Hallopora andrewsi
Parvohallopora
Parvohallopora ramosa
Heterotrypidae
Heterotrypa
Heterotrypa frondosa
Mesotrypidae
Atactoporella
Atactoporella newportensis
Homotrypa
Homotrypa flabellaris
Homotrypa obliqua
Peronopora
Peronopora decipiens
Peronopora vera
Monticuliporidae
Aspidopora
Aspidopora eccentrica
Aspidopora newberryi
Monticulipora
Monticulipora mammulata
Monticulipora molesta
Prasopora
Prasopora falesi
Trematoporidae
Batostoma
Batostoma jamesi
Batostoma varians
Unassigned genera
Monotrypella
Nicholsonella
Spatiopora
Cnidaria
Anthozoa
Rugosa
Streptelasmatidae
Grewingkia
Grewingkia canadensis
Streptelasma
Streptelasma divaricans
Tabulata
Billingsariidae
Foerstephyllum
Foerstephyllum vacuum
Coccoserididae
Protarea
Protarea richmondensis
Sryingophyllidae
Calapoecia
Calapoecia huronensis
Scyphozoa
Conulariida
Conulariidae
Conularia
Conularia formosa
Echinodermata
Crinoidea
Cladida
Dendrocrinidae
Plicodendrocrinus
Plicodendrocrinus casei
Merocrinidae
Merocrinus
Merocrinus curtus
Diplobathrida
Reteocrinidae
Gaurocrinus
Gaurocrinus nealli
Disparida
Heterocrinidae
Cincinnaticrinus
Cincinnaticrinus pentagonus
Cincinnaticrinus varibrachialis
Homocrinidae
Ectenocrinus
Ectenocrinus simplex
Iocrinidae
Iocrinus
Iocrinus subcrassus
Lichenocrinus
Lichenocrinus crateriformis
Lichenocrinus tuberculatus
Monobathrida
Glyptocrinidae
Glyptocrinus
Glyptocrinus decadactylus
Glyptocrinus fornshelli
Pycnocrinus
Pycnocrinus dyeri
Xenocrinidae
Xenocrinus
Xenocrinus baeri
Edrioasteroidea
Isorophida
Hemicystitidae
Carneyella
Carneyella pliea
Carneyella ulrichi
Isorophidae
Isorophus
Isorophus cincinnatiensis
Rhombifera
Dichoporita
Callocystitidae
Lepadocystis
Lepadocystis moorei
Hemichordata
Graptolithina
Graptoloidea
Diplograptidae
Arnheimograptus
Arnheimograptus anacanthus
Geniculograptus
Geniculograptus typicalis
Mastigograptida
Mastigograptidae
Mastigograptus
Mastigograptus tenuiramosus
Ichnofossils
Catellocaula
Chondrites
Cruziana
Diplichnites
Diplocraterion
Palaeophycus
Phycodes
Planolites
Rhabdoglyphus
Rusophycus
Trichophycus
Trypanites
Mollusca
Bivalvia
Actinodontida
Cycloconchidae
Cycloconcha
Cycloconcha milleri
Arcoida
Cyrtodontidae
Modiomorphida
Allodesmatidae
Ischyrodonta
Ischyrodonta elongata
Modiomorphidae
Modiolopsis
Modiolopsis modiolaris
Nuculoida
Ctenodontidae
Malletiidae
Nuculites
Praenuculidae
Pholadomyoida
Grammysiidae
Pterioida
Ambonychiidae
Allonychia
Allonychia jamesi
Ambonychia
Ambonychia alata
Ambonychia radiata
Ambonychia robusta
Anomalodonta
Anomalodonta gigantea
Anoptera
Anoptera miseneri
Trigonoida
Lyrodesmatidae
Lyrodesma
Gastropoda
Bellerophontida
Bellerophontidae
Bucania
Bucania simulatrix
Salpingostoma
Salpingostoma richmondensis
Sinuitidae
Sinuites
Sinuites cancellatus
Euomphalina
Holopeidae
Holopea
Holopea obliqua
Platyceratidae
Cyclonema
Cyclonema bilix
Cyclonema bilix lata
Cyclonema humerosum
Cyclonema inflatum
Cyclonema limatum
Cyclonema varicosum
Cyclonema simulans
Murchisoniina
Eotomariidae
Clathrospira
Clathrospira conica
Clathrospira subconica
Liospira
Liospira micula
Liospira vitruvia
Trochonematidae
Trochonema
Trochonema madisonense
Cephalopoda
Actinocerida
Armenoceratidae
Armenoceras
Armenoceras richmondensis
Gonioceratidae
Lambeoceras
Lambeoceras richmondense
Endocerida
Endoceratidae
Cameroceras
Cameroceras inaequabile
Endoceras
Endoceras proteiforme
Oncocerida
Oncoceratidae
Beloitoceras
Beloitoceras amoenum
Beloitoceras cumingsi
Orthocerida
Orthoceratidae
Pleurorthoceras
Pleurorthoceras clarksvillense
Richmondoceras
Richmondoceras brevicameratum
Proteoceratidae
Orthonybyoceras
Orthonybyoceras dyeri
Treptoceras
Treptoceras duseri
Tentaculita
Cornulitidae
Cornulites
Cornulites corragatus
Tentaculitidae
Tentaculites
Tentaculites richmondensis
Tergomya
Cyrtonellida
Cyrtolitidae
Cyrtolites
Cyrtolites ornatus
Porifera
Demospongia
Lithistida
Eospongiidae
Heterospongia
Heterospongia subramosa
Stromatoporoidea
Labechiida
Lophiostromatidae
Dermatostroma
Geology
Geologic Setting
Ordovician Outcrop Belt
Richmondian Invasion
Resources for Teachers
Fossil Collecting
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Creating the Digital Atlas
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triarthrus eatoni 250 black
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triarthrus eatoni 250 black
Posted onBy
July 30, 2014
UnderGrad
Posted in
Triarthrus
