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 538.8 and 252.17 million years of age.

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• † 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
• † Aenigmacaris – type locality for genus
  • † Aenigmacaris cornigerum – type locality for species

†Aenigmacaris cornigerum SCHRAM & HORNER 1979 from the Mississippian of Bear Gulch

• † Aesopichthys – type locality for genus
  • † Aesopichthys erinaceus – type locality for species
• † Albertella – type locality for genus
  • † Albertella hellena – type locality for species
• † Allanaria

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  Fossilized skeleton of the Carboniferous lobe-finned fish Allenypterus

  † Allenypterus – type locality for genus
  • † Allenypterus montanus – type locality for species
• † 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
  • † Aviculopecten kaibabensis – or unidentified comparable form
• † Aviculopinna
• † Avonia
  • † Avonia arcuata – tentative report
• † Axiodeaneia

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• † 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

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  Restoration of the Carboniferous Chimaera relative Belantsea

  † Belantsea – type locality for genus
  • † Belantsea montana – type locality for species
• † 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

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• † Cactocrinus – tentative report
• † Caenanoplia – tentative report
  • † Caenanoplia logani – or unidentified related form
• † Callograptus
• † Camaraspis
• † Camarophorella
  • † Camarophorella buckleyi – or unidentified comparable form
• † Camarotoechia
  • † Camarotoechia C. chouteauensis – or unidentified comparable form
  • † Camarotoechia C. inaequa Shaw – or unidentified comparable form
  • † Camarotoechia contracta
  • † Camarotoechia crenistria
  • † Camarotoechia elegantula
  • † Camarotoechia herrickana – or unidentified related form
  • † Camarotoechia metallica
  • † Camarotoechia mettalica – or unidentified comparable form
  • † Camarotoechia mutata
  • † Camarotoechia tuta
• † Canadiphyllum
• † Caninia
  • † Caninia montanensis – type locality for species
• † Carbosesostris – type locality for genus
  • † Carbosesostris megaliphagon – type locality for species

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  Fossilized skeleton of the Carboniferous coelacanth Caridosuctor

  † Caridosuctor – type locality for genus
  • † Caridosuctor populosum – type locality for species
• † Carinoclymenia
• † Cavusgnathus
  • † Cavusgnathus alta
  • † Cavusgnathus naviculus
• † Ceratopea
  • † Ceratopea sinclairensis
• † Ceratreta
• † Cheilocephalus
  • † Cheilocephalus brevilobus
• † Cheiloceras
  • † Cheiloceras simplex
• † Chilotrypa – tentative report
• † Chonetes
  • † Chonetes geniculatus
  • † Chonetes loganensis
  • † Chonetes logani
  • † Chonetes ornatus

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  Fossilized tooth of the shark Cladodus

  † Cladodus
• † Clavallus
  • † Clavallus spicaudina
• † Cleiothyridina
  • † Cleiothyridina atrypoides
  • † Cleiothyridina ciriacksi – type locality for species
  • † Cleiothyridina coloradoensis – or unidentified comparable form
  • † Cleiothyridina devonica
  • † Cleiothyridina hirsuta
  • † Cleiothyridina incrassata – or unidentified related form
  • † Cleiothyridina sublamellosa
• † Cleiothyridnia
  • † Cleiothyridnia sublamellosa
• † Cleistopora
  • † Cleistopora placenta
• † Clelandia
• † Cliffia
• † Clionolithes
• † Clonograptus

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  Fossilized shell of the Late Devonian-Permian brachiopod Composita

  † Composita
  • † Composita humilis
  • † Composita laevis
  • † Composita lateralis – or unidentified comparable form
  • † Composita madisonensis
  • † Composita ovata
  • † Composita ozarkana
  • † Composita sulcata
• † Conularia

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  Fossil of the Middle Ordovician-Carboniferous horn coral Cornulites

  † Cornulites
  • † Cornulites carbonarius
• † Costatoblastus – type locality for genus
  • † Costatoblastus sappingtonensis – type locality for species
• † Cranaena – tentative report
  • † Cranaena circularis – type locality for species
• † Crania
  • † Crania blairi – or unidentified comparable form
  • † Crania rowleyi
• † Croixana
• † Crurithyris
  • † Crurithyris minuta
  • † Crurithyris parva – or unidentified comparable form
• † Cryptonella – tentative report
  • † Cryptonella pinyonensis – or unidentified comparable form
• † Crytina
  • † Crytina acutirostris
• † Culmicrinus
  • † Culmicrinus jeffersonensis – or unidentified comparable form
• † Cupularostrum
  • † Cupularostrum contracta
• † Cyathaxonia
• † Cypricardella
• † Cyranorhis – type locality for genus
  • † Cyranorhis bergeraci – type locality for species
• † Cyrtina
  • † Cyrtina acutirostris – or unidentified comparable form
• † Cyrtiopsis – tentative report
• † Cyrtodiscus
• † Cyrtorostra
  • † Cyrtorostra varicostata

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  Fossilized shells of the Middle-Late Devonian brachiopod Cyrtospirifer

  † Cyrtospirifer
  • † Cyrtospirifer animaensis
  • † Cyrtospirifer animasensis – or unidentified comparable form
  • † Cyrtospirifer bertrandi – type locality for species
  • † Cyrtospirifer gallatinensis
  • † Cyrtospirifer hornellensis
  • † Cyrtospirifer monticola
  • † Cyrtospirifer perryi – type locality for species
  • † Cyrtospirifer thalattodoxa – tentative report
  • † Cyrtospirifer whitneyi
• † Cystodictya

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• † Damocles – type locality for genus
  • † Damocles serratus – type locality for species
• † Deadwoodia
• † Debeerius – type locality for genus
  • † Debeerius ellefseni – type locality for species
• † Dellea

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  Life restoration of the Carboniferous Chimaera relative Delphyodontos

  † Delphyodontos – type locality for genus
  • † Delphyodontos dacriformes – type locality for species
• † 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

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  Illustration of the fossilized pygidium (tail segment) of the Cambrian trilobite Dikelocephalus

  † Dikelocephalus
• † Dimegelasma
• † Dinotocrinus
• † Discoserra – type locality for genus
  • † Discoserra pectinodon – type locality for species

†Discoserra pectinodon Lund 2000 from the Mississippian of Bear Gulch

• † Distomodus
• † Dithyrocaris
  • † Dithyrocaris rolfei – type locality for species

†Dithyrocaris rolfei Schram and Horner 1978 from the Mississippian of Bear Gulch

• † Ditodus
• † Drepanodus
  • † Drepanodus subarcuatus
• † Drumaspis
• † Dysoristus

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• † Echinaria
• † Echinauris – or unidentified related form
• † Echinochimaera – type locality for genus
  • † Echinochimaera meltoni – type locality for species

†Echinochimaera meltoni Lund 1977 from the Mississippian of Bear Gulch

• • † Echinochimaera snyderi – type locality for species
• † 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

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• † Faberophyllum

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  Life restorations of a female (top) and male (bottom) of the Carboniferous Chimaera relative Falcatus

  † Falcatus
  • † Falcatus falcatus
• † Fasciculiamplexus
• † Fasciculophyllum
• † Favosites
• † Fenestella
• † Fenestralia – tentative report
• † Fenestrella
• † Finestrella – tentative report
• † Floweria
  • † Floweria chemungensis – or unidentified comparable form
• † Furcaster

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• † Gattendorfia
  • † Gattendorfia costata
• † Gennaeocrinus – or unidentified comparable form

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  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

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• † 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
  • † Hardistiella montanensis – type locality for species

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  Restoration (bottom) of the Carboniferous "antlered" Chimaera relative Harpagofututor

  † Harpagofututor – type locality for genus
  • † Harpagofututor volsellorhinus – type locality for species
• † Helicoprion
• † Heteralosia
  • † Heteralosia beecheri
• † Heteropecten
  • † Heteropecten vanvleeti – or unidentified comparable form
• † Heteropetalus – type locality for genus
  • † Heteropetalus elegantulus – type locality for species

†Heteropetalus elegantulus Lund 1977 from the Mississippian of Bear Gulch

• † 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

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• † 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

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  Restoration of the Carboniferous-Permian ray-like cartilaginous fish Janassa (top and left)

  † Janassa
  • † Janassa clarki – type locality for species
• † Joanellia
  • † Joanellia lundi
• † Juresania

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• † Kainella
  • † Kainella flagricauda
• † Kallimorphocrinus
• † Kalops
  • † Kalops diophrys
  • † Kalops monophrys
• † Katabuporhynchus
  • † Katabuporhynchus mesacostalis
• † Kayseraspis

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  Fossil of the Cambrian trilobite Kendallina

  † Kendallina
• † Kindbladia
• † Komiella
  • † Komiella ostiolata
• † Koninkophyllum – tentative report
• † Kootenia
• † Kyphocephalus

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• † 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

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• † Macluritella
  • † Macluritella stantoni – or unidentified related form
• † Macronoda
• † Maladia
• † Marginifera
• † Marginovatia
  • † Marginovatia duodenaria
• † Martinia
• † Maryvillia
  • † Maryvillia omega – type locality for species
• † Mastigograptus
• † Megalaspidella

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  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

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• † Nanorthis
  • † Nanorthis putilla

• 

  Fossilized shell of the Early Devonian – Triassic sea snail Naticopsis

  † Naticopsis
  • † Naticopsis remex – or unidentified comparable form
• † Nemavermes
  • † Nemavermes mackeei
• † Neoprioniodus
• † Neospirifer
  • † Neospirifer praenuntius – type locality for species
  • † Neospirifer striatus
• † 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

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• † Obolus

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  Fossil of the Ordovician trilobite Ogyginus

  † Ogyginus
• † Olenopsis
• † Orbiculoidea
  • † Orbiculoidea interlineata – type locality for species
  • † Orbiculoidea missouriensis – or unidentified comparable form
  • † Orbiculoidea utahensis
• † Orbinaria
• † Orthonychia
• † Orthotetes
• † Orygmaspis
• † Ovatia
  • † Ovatia croneisi
• † Oxinoxis
• † Ozarkodina
  • † Ozarkodina deflecta
  • † Ozarkodina elongata
  • † Ozarkodina macilenta
  • † Ozarkodina modesta
  • † Ozarkodina regularis

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• † 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

†Paratarrasius hibbardi Carboniferous Bear Gulch, Montana

• † 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
  • † Prototreta flabellata
  • † Prototreta subcircularis
  • † Prototreta trapeza
• † 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
  • † Ptychagnostus atavus
• † Ptychaspis
• † Ptychomalotoechia
  • † Ptychomalotoechia sobrina

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  Fossils of the Cambrian trilobite Ptychoparia

  † Ptychoparia
• † Ptyocephalus
  • † Ptyocephalus montanensis – type locality for species
• † Pugnoides
  • † Pugnoides parvulus
• † Punctolira
  • † Punctolira punctolira
• † Punctospirifer
  • † Punctospirifer transversus
• † Pustula

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• † 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

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• 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
  • † Siksika ottae – type locality for species
• † 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
  • † Spirifer brazerianus – or unidentified related form
  • † Spirifer centronatus
  • † Spirifer greenockensis – or unidentified comparable form
  • † Spirifer grimesi
  • † Spirifer louisianensis – or unidentified related form
  • † Spirifer marionensis – or unidentified comparable form
  • † Spirifer mudulus
  • † Spirifer raymondi
  • † Spirifer S. centronatus Winchell – or unidentified comparable form
  • † Spirifer S. grimesi Hall – or unidentified comparable form
  • † Spirifer shoshonensis
  • † Spirifer welleri – tentative report
• † 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
  • † Stethacanthus altonensis
• † Stigmacephalus
• † Straparollus
• † Streblochondria
• † Stutchburia
• † Sulcocephalus
• † Sulcoretepora
• † Symphysurina
• † Syntrophina
  • † Syntrophina nana
• † Syntrophopsis

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  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

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• † 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

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• † Vesiculophyllum
• † Vogelgnathus
  • † Vogelgnathus campbelli

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• † 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

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• † Xenostegium

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• † Yochelsonellisa
  • † Yochelsonellisa eximia

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• † Zaphrentites
• † Zaphriphyllum

References

• Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database" . Retrieved 17 December 2021.