List of the Paleozoic life of Montana

This list of the Paleozoic life of Montana contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Montana and are between 541 and 252.17 million years of age.

A
  • †Acanthocrania
    • †Acanthocrania spinosa – type locality for species
  • †Acanthograptus
  • †Acanthopecten
    • †Acanthopecten coloradoensis
  • †Achistrum
    • †Achistrum coloculum
    • †Achistrum gamma
    • †Achistrum monochordata
  • †Acrothele
    • †Acrothele colleni – type locality for species
    • †Acrothele pentagonensis
  • †Acrotreta
    • †Acrotreta attica – or unidentified comparable form
  • †Actinopteria
    • †Actinopteria subdecussata – or unidentified comparable form
  • †Adetognathus
    • †Adetognathus gigantus
    • †Adetognathus lautus
    • †Adetognathus spathus
  • †Aesopichthys – type locality for genus
    • †Aesopichthys erinaceus – type locality for species
  • †Albertella – type locality for genus
    • †Albertella hellena – type locality for species
  • †Allanaria
  • Fossilized skeleton of the Carboniferous lobe-finned fish Allenypterus
    †Allenypterus – type locality for genus
  • †Allorisma
  • †Ambocoelia
    • †Ambocoelia gregaria
  • †Ambothyris
  • †Ameura – tentative report
  • Ammodiscus
  • †Amphiscapha
  • †Amplexizaphrentis
    • †Amplexizaphrentis spinulosus – or unidentified comparable form
  • †Amplexus
  • †Angulotreta
  • †Angyomphalus – tentative report
    • †Angyomphalus excavatus – type locality for species
  • †Anisotrypa
  • †Ankhelasma
  • †Annuliconcha
  • †Anoria
  • †Anthracospirifer
    • †Anthracospirifer curvilateralis – type locality for species
    • †Anthracospirifer occidus
    • †Anthracospirifer shoshonensis
    • †Anthracospirifer welleri
  • †Antiquatonia
    • †Antiquatonia coloradoensis
    • †Antiquatonia pernodosa – type locality for species
  • †Apatokephalus
    • †Apatokephalus canadensis – or unidentified comparable form
  • †Aphelaeceras
  • †Aphelaspis
  • †Apheoorthis
    • †Apheoorthis ocha
  • †Aporthophyla
  • †Apotocardium
    • †Apotocardium latifasciatum
  • †Arceodomus
    • †Arceodomus glabrata – type locality for species
  • †Archisymplectes
    • †Archisymplectes rhothon
  • †Arctospirifer
    • †Arctospirifer allegheniensis – or unidentified comparable form
  • †Asaphellus
  • †Astartella
  • †Astreptoscolex
    • †Astreptoscolex anasillosus
  • †Athyris
  • †Atrypa
  • †Aulacoparia
    • †Aulacoparia impressa – type locality for species
    • †Aulacoparia wibauxensis
  • †Aulopora
  • Mold fossil of a shell of the Early Devonian-Late Triassic bivalve Aviculopecten
    †Aviculopecten
  • †Aviculopinna
  • †Avonia
    • †Avonia arcuata – tentative report
  • †Axiodeaneia

B
  • †Babylonites
  • †Bactrites
    • †Bactrites nitidus
  • Bairdia
  • †Barytichisma
    • †Barytichisma amsdenense
  • †Basilicorhynchus
    • †Basilicorhynchus ventricosum
  • †Bathyuriscus
    • †Bathyuriscus formosus – or unidentified comparable form
  • †Beagiascus – type locality for genus
    • †Beagiascus pulcherrimus – type locality for species
  • †Beecheria
    • †Beecheria paraplicata – type locality for species
  • Restoration of the Carboniferous Chimaera relative Belantsea
    †Belantsea – type locality for genus
  • †Bellefontia
  • †Bellerophon
    • †Bellerophon deflectus
  • †Bifungites
    • †Bifungites bisagitta
  • †Billingsella
  • †Blountia
  • †Bolaspis
  • †Brachythyris
  • †Bradyphyllum
    • †Bradyphyllum clavigerum – type locality for species
  • †Bryantodus
    • †Bryantodus crassidens
    • †Bryantodus scitulus
  • †Bryograptus
  • †Bucanella
  • †Bulimorpha
    • †Bulimorpha elegans
  • †Burnetiella
  • †Buxtonia
    • †Buxtonia arizonensis
  • †Bynumiella – tentative report
  • †Bynumina

C

D
  • †Damocles – type locality for genus
    • †Damocles serratus – type locality for species
  • †Deadwoodia
  • †Debeerius – type locality for genus
    • †Debeerius ellefseni – type locality for species
  • †Dellea
  • Life restoration of the Carboniferous Chimaera relative Delphyodontos
    †Delphyodontos – type locality for genus
  • †Delthyris – tentative report
  • †Dendrograptus
  • †Dentinella
  • †Derbyia
  • †Deuteronectanebos – type locality for genus
    • †Deuteronectanebos papillorum – type locality for species
  • †Diaphelasma
  • †Diaphragmus
    • †Diaphragmus fasciculatus
  • †Dicellomus
    • †Dicellomus occidentalis
  • †Dictyclostus
    • †Dictyclostus richardsi
  • †Dictyoclostus
    • †Dictyoclostus ferglenensis – or unidentified comparable form
    • †Dictyoclostus gallatinensis
    • †Dictyoclostus inflatus
    • †Dictyoclostus richardsi
  • †Dictyoclosyus
    • †Dictyoclosyus inflatus
  • †Dictyonema
  • †Dielasma
  • Illustration of the fossilized pygidium (tail segment) of the Cambrian trilobite Dikelocephalus
    †Dikelocephalus
  • †Dimegelasma
  • †Dinotocrinus
  • †Distomodus
  • †Ditodus
  • †Drepanodus
    • †Drepanodus subarcuatus
  • †Drumaspis
  • †Dysoristus

E
  • †Echinaria
  • †Echinauris – or unidentified related form
  • †Echinocoelia
    • †Echinocoelia youngstownensis
  • †Echinoconchus
    • †Echinoconchus alternatus – or unidentified related form
    • †Echinoconchus angustus – type locality for species
  • †Echinocrinus
  • †Edmondia
    • †Edmondia E. marionensis – or unidentified comparable form
    • †Edmondia stuchburia
  • †Ehmania – tentative report
  • †Eleutherokomma
    • †Eleutherokomma raymondi
  • †Elrathiella – or unidentified comparable form
  • †Elrathina
  • †Elvinia
    • †Elvinia roemeria
  • †Emanuella
  • †Enygmophyllum
  • Eocaudina
    • †Eocaudina columcanthus
    • †Eocaudina marginata
    • †Eocaudina subhexagona
  • †Eolissochonetes
    • †Eolissochonetes pseudoliratus – type locality for species
  • †Eoorthis
    • †Eoorthis remnicha
  • †Euconia
    • †Euconia umbilicata
  • †Euloma
  • †Eumetria
    • †Eumetria acuticosta
    • †Eumetria vera – or unidentified comparable form
    • †Eumetria verneuilana – or unidentified comparable form
    • †Eumetria verneuiliana – or unidentified comparable form
  • †Euphemites
    • †Euphemites crenulatus
    • †Euphemites sacajawensis
  • †Euphemitopsis
    • †Euphemitopsis paucinodosus – or unidentified comparable form
    • †Euphemitopsis subpapillosa
  • †Exochops

F
  • †Faberophyllum
  • Life restorations of a female (top) and male (bottom) of the Carboniferous Chimaera relative Falcatus
    †Falcatus
  • †Fasciculiamplexus
  • †Fasciculophyllum
  • †Favosites
  • †Fenestella
  • †Fenestralia – tentative report
  • †Fenestrella
  • †Finestrella – tentative report
  • †Floweria
    • †Floweria chemungensis – or unidentified comparable form
  • †Furcaster

G
  • †Gattendorfia
    • †Gattendorfia costata
  • †Gennaeocrinus – or unidentified comparable form
  • Fossil of the Early-Late Ordovician trilobite Geragnostus
    †Geragnostus
  • †Girtyella
    • †Girtyella indianensis
    • †Girtyella woodsworthi – or unidentified comparable form
    • †Girtyella woodworthi
  • †Glabretina – type locality for genus
    • †Glabretina andrewsi – type locality for species
  • †Glabrocingulum – tentative report
  • †Glaphyraspis
    • †Glaphyraspis parva
  • †Glossopleura
  • †Glyphaspis
    • †Glyphaspis robusta
  • †Grammysia
    • †Grammysia G. welleri – or unidentified comparable form
  • †Graphiadactyllis
  • †Guizhoupecten

H
  • †Hadronector – type locality for genus
    • †Hadronector donbairdi – type locality for species
  • †Hallograptus
  • †Hamburgia – tentative report
    • †Hamburgia walteri – or unidentified comparable form
  • †Hammatocyclus
  • †Haplistion
  • †Hapsiphyllum
  • †Hardistiella – type locality for genus
  • Restoration (bottom) of the Carboniferous "antlered" Chimaera relative Harpagofututor
    †Harpagofututor – type locality for genus
  • †Helicoprion
  • †Heteralosia
    • †Heteralosia beecheri
  • †Heteropecten
    • †Heteropecten vanvleeti – or unidentified comparable form
  • †Homalophyllites
  • †Homotreta
    • †Homotreta interrupta
  • †Hormotoma
  • †Horridonia – report made of unidentified related form or using admittedly obsolete nomenclature
  • †Housia
    • †Housia canadensis
  • †Huenella
  • †Hunanospirifer
    • †Hunanospirifer animasensis
    • †Hunanospirifer gallatinensis – tentative report
    • †Hunanospirifer monticola
  • †Hustedia
    • †Hustedia texana
  • Fossilized shells of the Cambrian-Permian brachiopod relative Hyolitha
    †Hyolithes
  • Hyperammina
  • †Hypothyris
  • †Hypseloconus
    • †Hypseloconus elongatus
    • †Hypseloconus simplex
  • †Hystriculina
    • †Hystriculina wabashensis – or unidentified comparable form
  • †Hystricurus

I
  • †Icodonta
    • †Icodonta nixonensis – or unidentified comparable form
    • †Icodonta typica
  • †Idahoia
  • †Imbrexia
  • †Imbricatia
  • †Imitoceras
  • †Inflatia
    • †Inflatia inflata – or unidentified comparable form
  • †Iphidella
    • †Iphidella hexagona
    • †Iphidella nyssa
  • †Irvingella

J

K
  • †Kainella
    • †Kainella flagricauda
  • †Kallimorphocrinus
  • †Kalops
    • †Kalops diophrys
    • †Kalops monophrys
  • †Katabuporhynchus
    • †Katabuporhynchus mesacostalis
  • †Kayseraspis
  • Fossil of the Cambrian trilobite Kendallina
    †Kendallina
  • †Kindbladia
  • †Komiella
    • †Komiella ostiolata
  • †Koninkophyllum – tentative report
  • †Kootenia
  • †Kyphocephalus

L
  • †Labiostria
  • †Laminatia
    • †Laminatia laminata – tentative report
  • †Langepis
    • †Langepis campbelli
  • †Lecanospira
  • †Leioestheria
  • †Leioproductus
    • †Leioproductus coloradensis
    • †Leioproductus montanensis – type locality for species
    • †Leioproductus plicatus
  • †Leiorhynchus
    • †Leiorhynchus carboniferus
    • †Leiorhynchus dunbarense – or unidentified comparable form
    • †Leiorhynchus gibbosa – or unidentified comparable form
    • †Leiorhynchus jeffersonense
    • †Leiorhynchus lesleyi
    • †Leiorhynchus seversoni
    • †Leiorhynchus ventricosa
    • †Leiorhynchus ventricosta – or unidentified related form
  • †Lepidasterella
    • †Lepidasterella montanensis – type locality for species
  • †Leptaena
  • †Leptagonia
    • †Leptagonia analoga
  • †Leptalosia
    • †Leptalosia scintilla – tentative report
  • †Leptella
  • †Leptodesma
  • †Leptodus
  • †Leptotrypella
  • †Liardiphyllum
  • †Licnocephala
  • †Limipecten
    • †Limipecten grandicostatus – or unidentified comparable form
    • †Limipecten otterensis – type locality for species
  • †Lineagruan – type locality for genus
    • †Lineagruan judithi – type locality for species
    • †Lineagruan snowyi – type locality for species
  • †Lingula
    • †Lingula carbonaria – or unidentified comparable form
  • Illustration of a fossilized shell of the Cambrian-Late Ordovician brachiopod Lingulella
    †Lingulella
    • †Lingulella ibicus
  • †Lingulepis
  • †Linnarssonella
    • †Linnarssonella girtyi
  • †Linnarssonia
    • †Linnarssonia perplexa
    • †Linnarssonia rotunda
  • †Linoproductus
    • †Linoproductus croneisi
    • †Linoproductus duodenaris – type locality for species
    • †Linoproductus nodosus
    • †Linoproductus ovatus
  • †Lioestheria
  • †Lithostrotion
  • †Lithostrotionella
    • †Lithostrotionella microstylum Grity
  • Lituotuba – tentative report
  • †Lloydia
    • †Lloydia incomperta
    • †Lloydia manitouensis – or unidentified comparable form
  • †Lochmocercus – type locality for genus
    • †Lochmocercus aciculodontus – type locality for species
  • †Lonchodina
    • †Lonchodina projecta
  • †Longiclava – type locality for genus
    • †Longiclava tumida – type locality for species
  • †Loxonema
    • †Loxonema approximatum
  • †Lyroschizodus
    • †Lyroschizodus oklahomensis – or unidentified comparable form

M
  • †Macluritella
    • †Macluritella stantoni – or unidentified related form
  • †Macronoda
  • †Maladia
  • †Marginifera
  • †Marginovatia
    • †Marginovatia duodenaria
  • †Martinia
  • †Maryvillia
    • †Maryvillia omega – type locality for species
  • †Mastigograptus
  • †Megalaspidella
  • Fossil of the Cambrian-Silurian trilobite Megistaspis
    †Megistaspis
  • †Megistocrinus – or unidentified comparable form
  • †Metriophyllum
  • †Michelinia
  • †Microantyx
    • †Microantyx botoni
    • †Microantyx mudgei
    • †Microantyx permiana
  • †Micromitra
    • †Micromitra sculptilis
    • †Micromitra subdita
  • †Millerella
  • †Monocheilus
  • †Mooreoceras – tentative report
  • †Multivasculatus
  • †Myalina
    • †Myalina meeki
    • †Myalina parallela – type locality for species

N
  • †Nanorthis
    • †Nanorthis putilla
  • Fossilized shell of the Early Devonian – Triassic sea snail Naticopsis
    †Naticopsis
  • †Nemavermes
    • †Nemavermes mackeei
  • †Neoprioniodus
  • †Neospirifer
  • †Neozaphrentis
    • †Neozaphrentis parasitica
  • †Netsepoye – type locality for genus
    • †Netsepoye hawesi – type locality for species
  • †Nickelsopora
  • †Nisusia
    • †Nisusia deissi
    • †Nisusia lickensis
    • †Nisusia montanaensis
  • †Nix – type locality for genus
    • †Nix angulata – type locality for species
  • †Nucleospira
    • †Nucleospira obesa
  • Nuculana
    • †Nuculana biangulata – type locality for species
  • †Nuculopsis
    • †Nuculopsis poposiensis

O

P
  • †Paladin – tentative report
  • †Palaeoneilo
    • †Palaeoneilo elongata
  • †Palaeonucula
    • †Palaeonucula montanensis
  • †Paleolimulus
    • †Paleolimulus longispinus
  • †Papilionichthys – type locality for genus
    • †Papilionichthys stahlae – type locality for species
  • †Parabolinoides
  • †Paracyclus
  • †Paraparchites
  • †Paraphorhynchus
    • †Paraphorhynchus ashboughense – type locality for species
    • †Paraphorhynchus jeffersonense
    • †Paraphorhynchus madisonense
    • †Paraphorhynchus threeforkensis – type locality for species
    • †Paraphorhynchus threeforksense
  • †Paratarrasius – type locality for genus
    • †Paratarrasius hibbardi – type locality for species
  • †Pegmatrea – or unidentified related form
  • †Pelagiella
  • †Peltabellia
    • †Peltabellia willistoni – type locality for species
  • †Pennireptepora
  • Fossilized theca of the Carboniferous blastoid echinoderm ("sea bud") Pentremites
    †Pentremites
  • †Perditocardinia
  • †Pericyclus
    • †Pericyclus rockymontanus – type locality for species
  • †Permophorus
    • †Permophorus albequus
  • †Pernoceras
    • †Pernoceras crebriseptum
  • †Peronopsis
    • †Peronopsis scutalis – or unidentified comparable form
  • †Petalorhynchus
    • †Petalorhynchus beargulchensis – type locality for species
  • †Petrocrania
    • †Petrocrania modesta – or unidentified comparable form
  • †Phestia
    • †Phestia rugodorsata – type locality for species
  • †Phiops – type locality for genus
    • †Phiops aciculorum – type locality for species
  • †Pinctus
  • †Pinna
    • †Pinna ludlovi
  • †Plagioglypta
  • †Platyceras
    • †Platyceras niagarensis – or unidentified comparable form
  • Fossilized shell of the Late Devonian ammonoid cephalopod Platyclymenia
    †Platyclymenia
    • †Platyclymenia montana
  • †Platycrinus
    • †Platycrinus bozemanensis
    • †Platycrinus incomptus
  • †Plectodiscus
    • †Plectodiscus latinautilus
  • †Plectospira – tentative report
    • †Plectospira problematica – or unidentified comparable form
  • †Plethopeltis
  • †Plethospira
  • †Pleuroclymenia
    • †Pleuroclymenia americana
  • †Polidevcia
    • †Polidevcia obesa
  • †Polyosteorhynchus – type locality for genus
    • †Polyosteorhynchus simplex – type locality for species
  • †Polypora
  • †Polyrhizodus
    • †Polyrhizodus digitatus
  • †Praepatokephalus
  • †Presbynileus
  • †Proceramala – type locality for genus
    • †Proceramala montanensis – type locality for species
  • †Procostatoria
    • †Procostatoria sexradiata
  • †Prodentalium
    • †Prodentalium canna
  • †Productella
    • †Productella coloradensis
    • †Productella coloradoense – or unidentified comparable form
    • †Productella coloradoensis
    • †Productella plicata – or unidentified comparable form
    • †Productella spinerga – or unidentified comparable form
  • †Productus
  • Restoration of the Silurian trilobite Proetus
    †Proetus
  • †Prographularia
    • †Prographularia groenlandica – or unidentified comparable form
  • †Promesus
  • †Proplina
    • †Proplina loganensis – type locality for species
  • †Protopliomerops
  • †Prototreta
  • †Psalikilus
    • †Psalikilus paraspinosum
  • †Psammodus
  • †Pseudagnostus
  • †Pseudoclelandia
  • †Pseudodicellomus
  • †Pseudogastrioceras
  • †Pseudomonotis
  • †Pseudopermophorus
    • †Pseudopermophorus annettae – type locality for species
  • †Pseudozygopleura
    • †Pseudozygopleura scitula – or unidentified related form
  • †Pterocephalia
  • †Ptilograptus
  • †Ptychagnostus
  • †Ptychaspis
  • †Ptychomalotoechia
    • †Ptychomalotoechia sobrina
  • Fossils of the Cambrian trilobite Ptychoparia
    †Ptychoparia
  • †Ptyocephalus
    • †Ptyocephalus montanensis – type locality for species
  • †Pugnoides
    • †Pugnoides parvulus
  • †Punctolira
    • †Punctolira punctolira
  • †Punctospirifer
    • †Punctospirifer transversus
  • †Pustula

R
  • †Rachistognathus
  • †Rainerichthys – type locality for genus
    • †Rainerichthys zangerli – type locality for species
  • †Ramesses – type locality for genus
    • †Ramesses magnus – type locality for species
  • †Ramiporalia
  • †Raphistomina
  • †Renalcis
  • †Reticularia
  • †Reticulariina
    • †Reticulariina browni
    • †Reticulariina spinosa
  • †Reticularina
    • †Reticularina spinosa
  • †Retispira
  • †Reubenella – type locality for genus
    • †Reubenella rex – type locality for species
  • †Rhabdomeson
  • †Rhineoderma
  • †Rhipidomella
    • †Rhipidomella missouriensis
    • †Rhipidomella newalbanensis – or unidentified comparable form
  • †Rhombopora
  • †Rhynchopora
  • †Rhynchotreta – tentative report
  • †Rhytiophora
    • †Rhytiophora arcuatus
  • †Rhytiopora
    • †Rhytiopora arcuatus – tentative report
  • †Rota
    • †Rota martini
  • †Rotiphyllum
  • †Rugoclostus
  • †Rylstonia
  • †Rystonia
    • †Rystonia R. teres (Grity) – or unidentified comparable form

S
  • Saccammina
  • †Sanguinolites
    • †Sanguinolites altidorsata – type locality for species
  • †Saratogia
  • †Saukia
  • †Scalarituba
    • †Scalarituba missouriensis
  • †Scapallina
    • †Scapallina phosphoriensis
  • †Scaphellina
    • †Scaphellina concinna
  • †Scaphiomanon – type locality for genus
    • †Scaphiomanon hadros – type locality for species
    • †Scaphiomanon nodulosum – type locality for species
  • †Schallwienella
  • †Schellwienella
    • †Schellwienella inflata
  • †Schizambon
  • †Schizodus
    • †Schizodus bifidus – type locality for species
  • †Schizopea
  • †Schizophoria
    • †Schizophoria australis
    • †Schizophoria compacta
    • †Schizophoria depressa – type locality for species
    • †Schizophoria striatula
    • †Schizophoria strophodonta
  • †Schuchertalla
  • †Schuchertella
    • †Schuchertella arctostriata
    • †Schuchertella extensus – or unidentified comparable form
    • †Schuchertella inflata
    • †Schuchertella lens
    • †Schuchertella nodocostata
  • †Scolopodus
    • †Scolopodus quadraplicatus
  • †Sentosia
    • †Sentosia spinigera – or unidentified comparable form
  • †Septimyalina
  • †Shizophoria
    • †Shizophoria chouteauensis
    • †Shizophoria swalleri
  • †Shumardella
    • †Shumardella dunbarensis
  • †Siksika – type locality for genus
  • †Sinuella
  • †Soleniscus
  • †Solenopleurella
  • †Soris – type locality for genus
    • †Soris labiosus – type locality for species
  • †Spathognathodus
    • †Spathognathodus peculiaris
  • †Sphenosteges
  • †Sphenotus
    • †Sphenotus altidorsatus – or unidentified comparable form
  • Fossilized shell of the Late Ordovician-Late Triassic brachiopod Spirifer
    †Spirifer
  • †Spiriferina
    • †Spiriferina solidirostris – or unidentified comparable form
  • Spirorbis
    • †Spirorbis kinderhookensis
    • †Spirorbis moreyi – or unidentified related form
  • †Spraparallus
  • †Squamaria
  • †Squatinactis – type locality for genus
    • †Squatinactis caudispinatus – type locality for species
  • †Squillites – type locality for genus
    • †Squillites spinosus – type locality for species
  • †Stenoglaphyrites
    • †Stenoglaphyrites hesperius
  • †Stenoscisma
    • †Stenoscisma obesa
  • Life restorations of a male (foreground) and female (background) of the Late Devonian-Carboniferous Chimaera relative Stethacanthus
    †Stethacanthus
  • †Stigmacephalus
  • †Straparollus
  • †Streblochondria
  • †Stutchburia
  • †Sulcocephalus
  • †Sulcoretepora
  • †Symphysurina
  • †Syntrophina
    • †Syntrophina nana
  • †Syntrophopsis
  • Fossil of the Devonian tabulate coral Syringopora
    †Syringopora
    • †Syringopora aculeata Grity
    • †Syringopora suraularia – or unidentified related form
  • †Syringospira
    • †Syringospira prima
  • †Syringothyris
    • †Syringothyris hannibalensis
    • †Syringothyris typus – or unidentified comparable form

T
  • †Taenicephalus
  • †Teiichispira
    • †Teiichispira affinis
  • †Tetralobula
  • †Thalattocanthus
    • †Thalattocanthus consonus
  • †Thamnopora
  • Thurammina
  • †Thuroholia
    • †Thuroholia cribriformis
    • †Thuroholia spicatus
  • †Thysanophyllum
  • †Timaniella
    • †Timaniella pseudocamerata
  • †Tolypammina
  • †Tomagnostus
  • †Tomasina – tentative report
  • †Tonkinella
    • †Tonkinella stephenensis – or unidentified comparable form
  • †Tornoceras
    • †Tornoceras crebiseptum
  • †Torynifer
    • †Torynifer cooperensis
    • †Torynifer setiger – or unidentified comparable form
  • †Torynifera
    • †Torynifera montanus
  • †Trachelocrinus – tentative report
  • †Triplophylliltes
    • †Triplophylliltes spinulosus – or unidentified comparable form
  • †Trochophyllum
  • †Tropidodiscus
  • Tubulipora
    • †Tubulipora amsdenense – tentative report
  • †Tylonautilus
  • †Tylothyris
    • †Tylothyris clarkesvillensis
    • †Tylothyris clarksvillensis
    • †Tylothyris compacta
    • †Tylothyris novamexicana – or unidentified comparable form

V
  • †Vesiculophyllum
  • †Vogelgnathus
    • †Vogelgnathus campbelli

W
  • †Warthia
  • †Waylandella
  • †Wellerella
    • †Wellerella osagensis – or unidentified comparable form
  • †Wendyichthys – type locality for genus
    • †Wendyichthys dicksoni – type locality for species
    • †Wendyichthys lautreci – type locality for species
  • †Westergaardodina
  • †Whidbornella
    • †Whidbornella hirsuta
    • †Whidbornella lachrymosa
  • †Wilbernia
  • †Wilkingia
    • †Wilkingia inflata – type locality for species
    • †Wilkingia walkeri
  • †Wimanella – type locality for genus
    • †Wimanella simplex – type locality for species
  • †Worthenia – tentative report

X
  • †Xenostegium

Y
  • †Yochelsonellisa
    • †Yochelsonellisa eximia

Z
  • †Zaphrentites
  • †Zaphriphyllum

References
  • Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 7 August 2017.
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