This list of the prehistoric life of Texas contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Texas.

The Paleobiology Database records no known occurrences of Precambrian fossils in Texas

• 

  †Acheloma – type locality for genus
  • †Acheloma cumminsi – type locality for species
• †Achistrum
  • †Achistrum ludwigi – type locality for species
• †Acrodus – tentative report
  • †Acrodus olsoni – type locality for species
  • †Acrodus sweetlacruzensis – type locality for species
• †Actinoconchus
• †Acutichiton
• †Adamantina
• †Adrianites – tentative report
• †Agathiceras
  • †Agathiceras applini – type locality for species
• †Alegeinosaurus
• †Alethopteris
• †Almites
• †Altudoceras
• †Alveus – type locality for genus
• †Amphiscapha
• †Amplexus – report made of unidentified related form or using admittedly obsolete nomenclature

• 

  Amusium – tentative report
• †Ananias
• †Anatsabites
• †Angelosaurus – type locality for genus
  • †Angelosaurus dolani – type locality for species
• †Anisodexis
• †Annularia
  • †Annularia stellata – or unidentified comparable form
• †Anomalesia
• †Anomphalus
• †Aphetoceras
• †Aphlebia
• †Apsisaurus – type locality for genus
  • †Apsisaurus witteri – type locality for species

• 

  †Araeoscelis – type locality for genus
• †Archaeocidaris
• Archaeolithophyllum
• †Archeria – type locality for genus
  • †Archeria crassidisca – type locality for species
• †Archimedes
• †Arcuolimbus
• †Aristoceras
• †Armenoceras
• †Artisia
• †Aspidosaurus – type locality for genus
• †Athyris
• †Aulopora – report made of unidentified related form or using admittedly obsolete nomenclature

• 

  †Aviculopecten
  • †Aviculopecten ballingerana
  • †Aviculopecten girtyi – type locality for species
  • †Aviculopecten gryphus – type locality for species
  • †Aviculopecten occidentalis
  • †Aviculopecten sumnerensis
• †Avonia
• †Barnesoceras – type locality for genus
• †Bathyglyptus – type locality for genus
• †Bellerophon – tentative report
• †Bellerophon
  • †Bellerophon graphicus
• †Bembexia
• †Bitaunioceras
• †Blountiella

• 

  †Bolosaurus – type locality for genus
  • †Bolosaurus major – type locality for species
  • †Bolosaurus striatus – type locality for species
• †Brachydectes
• †Brachyphyllum – tentative report
• †Branneroceras
• †Broiliellus – type locality for genus
  • †Broiliellus brevis – type locality for species
  • †Broiliellus olsoni – type locality for species
  • †Broiliellus texensis – type locality for species
• †Burenoceras

• 

  †Cacops
  • †Cacops aspidephorus – type locality for species
• †Calamites
  • †Calamites undulatus
• †Callipteridium
• †Callipteris
  • †Callipteris conferta
• †Calophyllum – tentative report
• †Camarotoechia
• †Captorhinus – type locality for genus
  • †Captorhinus aguti – type locality for species
• †Carbonicola
• †Cardiocephalus – type locality for genus
  • †Cardiocephalus sternbergi – type locality for species
• †Carrolla – type locality for genus

• 

  †Casea – type locality for genus
  • †Casea broilii – type locality for species
• †Caseoides – type locality for genus
• †Caseopsis
• †Cassiavellia – type locality for genus
  • †Cassiavellia galtarae – type locality for species
• †Catenipora
• †Cedaria
• †Chancelloria – tentative report
• †Chonetes
  • †Chonetes flemingi – tentative report
  • †Chonetes verneuilianus
• †Cibolites – type locality for genus
• †Clarkoceras

• 

  †Cleiothyridina
  • †Cleiothyridina mulsa
  • †Cleiothyridina nana
  • †Cleiothyridina pilularis
  • †Cleiothyridina rara
  • †Cleiothyridina rectimarginata – type locality for species
• †Climacograptus
• †Clitendoceras
• †Clonograptus
• †Coenocystis – type locality for genus
• †Collemataria – type locality for genus

• 

  †Composita
  • †Composita affinis
  • †Composita apheles – type locality for species
  • †Composita apsidata
  • †Composita bucculenta – type locality for species
  • †Composita costata
  • †Composita cracens
  • †Composita crassa – type locality for species
  • †Composita discina
  • †Composita emarginata
  • †Composita enormis – type locality for species
  • †Composita imbricata – type locality for species
  • †Composita mexicana
  • †Composita mira
  • †Composita nucella
  • †Composita ovata
  • †Composita parasulcata – type locality for species
  • †Composita pilula
  • †Composita prospera
  • †Composita pyriformis
  • †Composita quantilla
  • †Composita stalagmium
  • †Composita strongyle – type locality for species
  • †Composita subcircularis
  • †Composita subtilita
• †Conjunctio
• †Conocardium – tentative report
• †Cooperoceras – type locality for genus
• †Coosella
• †Coosia
• †Cordaites
  • †Cordaites principalis
• †Cotteroceras

• 

  †Cotylorhynchus
  • †Cotylorhynchus hancocki – type locality for species
• Crania
• †Cravenoceras – tentative report
• †Cricotus
• †Crossotelos
• †Ctenacanthus
  • †Ctenacanthus amblyxiphias – type locality for species
• †Ctenospondylus – type locality for genus
• †Cylicioscapha
• †Cypricardinia – tentative report
• †Cyptendoceras
• †Cystothalamia – type locality for genus
  • †Cystothalamia megacysta
  • †Cystothalamia nodulifera
• †Dadoxylon
• †Dakeoceras – tentative report
• †Dasyceps
• †Deiracephalus
• Dentalium
• †Diadectes – type locality for genus
• †Dimacrodon – type locality for genus

• 

  †Dimetrodon – type locality for genus
  • †Dimetrodon booneorum – type locality for species
  • †Dimetrodon dollovianus – type locality for species
  • †Dimetrodon gigashomogenes – type locality for species
  • †Dimetrodon grandis – type locality for species
  • †Dimetrodon kempae – type locality for species
  • †Dimetrodon limbatus – type locality for species
  • †Dimetrodon loomisi – type locality for species
  • †Dimetrodon macrospondylus – type locality for species
  • †Dimetrodon milleri – type locality for species
  • †Dimetrodon natalis – type locality for species
• †Diplocaulus – type locality for genus
  • †Diplocaulus magnicornis – type locality for species
• †Diraphora
• †Dissorophus – type locality for genus
  • †Dissorophus multicinctus – type locality for species
• †Domatoceras
• †Driveria – type locality for genus
• †Echinaria
• †Ectenolites

• 

  †Edaphosaurus – type locality for genus
  • †Edaphosaurus boanerges
  • †Edaphosaurus cruciger – or unidentified related form
  • †Edaphosaurus pogonias – type locality for species
• †Edestus
• †Edmondia
• †Edops
  • †Edops craigi
• †Ellesmeroceras
• †Empedias
• †Endoceras
• †Endolobus
• Eocaudina
• †Eosyodon – type locality for genus
• †Eothyris – type locality for genus
  • †Eothyris parkeyi – type locality for species
• †Eowellerites
• †Epiphyton
• †error
• †Error

• 

  †Eryops – type locality for genus
  • †Eryops megacephalus – type locality for species
• †Estheria
• †Euomphalus
• †Euryodus – type locality for genus
  • †Euryodus primus – type locality for species
• †Exovasa – type locality for genus
  • †Exovasa cystauletoides – type locality for species
• †Fenestella
• †Fusulina – report made of unidentified related form or using admittedly obsolete nomenclature
• †Gastrioceras
• †Geinitzina
• †Genevievella
• †Geragnostus

• 

  †Gerobatrachus – type locality for genus
  • †Gerobatrachus hottoni – type locality for species
• †Gervillia – report made of unidentified related form or using admittedly obsolete nomenclature
• †Girvanella
• †Glaucosaurus – type locality for genus
  • †Glaucosaurus megalops – type locality for species
• †Glikmanius
  • †Glikmanius occidentalis
• †Gnathorhiza
• †Goniatites
• †Gorgodon – type locality for genus
  • †Gorgodon minutus – type locality for species
• †Grewingkia
• †Guadalupia
  • †Guadalupia auricula – type locality for species
  • †Guadalupia cupulosa – type locality for species
  • †Guadalupia microcamera – type locality for species
  • †Guadalupia ramescens – type locality for species
  • †Guadalupia vasa – type locality for species
• †Gypospirifer – type locality for genus
  • †Gypospirifer condor
• †Helicoconchus – type locality for genus

• 

  †Helicoprion
  • †Helicoprion davisii
• †Helminthochiton
• †Hercosestria
• †Hoffmannia – report made of unidentified related form or using admittedly obsolete nomenclature
• †Homagnostus
• †Hybodus
• †Hypseloconus
• †Icriodus
• †Incisimura – type locality for genus
  • †Incisimura bella – type locality for species

• 

  †Isodectes
• †Isogramma
• †Janassa
• †Jeffersonia
• †Jinogondolella
• †Kingstonia
• †Knoxosaurus – type locality for genus
• †Kockelella
• †Komia
• †Labidosaurikos
• †Labidosaurus
• †Lambeoceras
• †Lepidophyllum
• †Levisoceras
• †Limbella
• Lingula
• †Liroceras
• †Llanoaspis

• 

  †Lysorophus
• †Martinia
• †Mastersonia – type locality for genus
• †Mcqueenoceras
• †Metacoceras
• †Metalegoceras
• †Meteoraspis
• †Metoptoma
• †Michelinoceras – tentative report
• †Micraroter – tentative report
  • †Micraroter erythrogeios
• †Microbaltoceras – type locality for genus
• †Minilya
• †Murchisonia

• 

  †Mycterosaurus – type locality for genus
  • †Mycterosaurus longiceps – type locality for species
• †Nanobamus – type locality for genus
• †Naticopsis
  • †Naticopsis judithae
  • †Naticopsis remex
  • †Naticopsis transversa – type locality for species
• †Neldasaurus
• †Neoaganides
• †Neocalamites – or unidentified comparable form

• 

  †Neospirifer
  • †Neospirifer amphigyus – type locality for species
  • †Neospirifer apothescelus – type locality for species
  • †Neospirifer bakeri – type locality for species
  • †Neospirifer cameratus – tentative report
  • †Neospirifer formulosus
  • †Neospirifer huecoensis – type locality for species
  • †Neospirifer kansasensis
  • †Neospirifer mansuetus
  • †Neospirifer neali
  • †Neospirifer notialis
  • †Neospirifer placidus
  • †Neospirifer triplicatus
  • †Neospirifer venezuelensis
• †Neuropteris
  • †Neuropteris cordata – tentative report
• †Nielsenoceras
• †Norwoodia
• Nucula – report made of unidentified related form or using admittedly obsolete nomenclature
• †Nybyoceras
• †Olenus

• 

  †Ophiacodon – type locality for genus
  • †Ophiacodon major – type locality for species
  • †Ophiacodon retroversus – type locality for species
  • †Ophiacodon uniformis – type locality for species
• †Ormoceras
• †Orodus
• †Orthacanthus
• †Ostodolepis – type locality for genus
• †Oulodus
• †Ozarkodina
• †Pachylyroceras
• †Paladin
• †Palaeoniscus – tentative report

• 

  †Pantylus – type locality for genus
  • †Pantylus cordatus – type locality for species
• †Paraceltites
• †Parafusulina
• †Paralegoceras
• †Paraschwagerina
• †Pariotichus – type locality for genus
• †Parioxys – type locality for genus
• Patella – tentative report

• 

  †Pecopteris
  • †Pecopteris arborescens
  • †Pecopteris hemitelioides
  • †Pecopteris unita
• †Pedanochiton – type locality for genus
• †Pelodosotis – type locality for genus
  • †Pelodosotis elongatum – type locality for species
• †Peripetoceras
• †Petalodus
• †Phlegethontia – tentative report
• †Phonerpeton
  • †Phonerpeton pricei – type locality for species
• †Pinnularia
• †Plaesiomys
• †Plagiostoma – report made of unidentified related form or using admittedly obsolete nomenclature
• †Platyceras

• 

  †Platyhystrix – or unidentified comparable form
• †Plectronoceras
• †Pleuronautilus
• Pleurotomaria – report made of unidentified related form or using admittedly obsolete nomenclature
• †Plicochonetes
• †Posidonia
• Priscopedatus
• †Prodentalium
• †Prostacheoceras
  • †Prostacheoceras skinneri – type locality for species
• †Protocaptorhinus – type locality for genus
  • †Protocaptorhinus pricei – type locality for species
• †Protorothyris – type locality for genus
  • †Protorothyris archeri – type locality for species

• 

  †Psaronius
• †Pseudomelania – report made of unidentified related form or using admittedly obsolete nomenclature
• Pteria – report made of unidentified related form or using admittedly obsolete nomenclature
• †Pterochiton
• †Pugnax
• †Quadratia
• †Quasicaecilia – type locality for genus
• †Rananasus
• †Rayonnoceras
• †Reiszorhinus – type locality for genus
• †Retaria – report made of unidentified related form or using admittedly obsolete nomenclature
• †Rhabdiferoceras
• †Rhynchonella – report made of unidentified related form or using admittedly obsolete nomenclature
• †Ribeiria
• †Rioceras
• †Romeria – type locality for genus
  • †Romeria prima – type locality for species
  • †Romeria texana – type locality for species
• †Rota

• 

  †Rubeostratilia – type locality for genus
• †Rugaria
• †Ruthenoceras – report made of unidentified related form or using admittedly obsolete nomenclature
• †Sagenodus
• †Sallya
• †Samaropsis
• †Sauropleura
• †Scapanops – type locality for genus
  • †Scapanops neglecta – type locality for species
• †Schwagerina
• †Secodontosaurus
  • †Secodontosaurus obtusidens – type locality for species
• Serpula – tentative report

• 

  †Seymouria – type locality for genus
  • †Seymouria baylorensis – type locality for species
• †Shouchangoceras
• †Sigillaria
  • †Sigillaria brardii
• †Slaugenhopia – type locality for genus
• Solemya – tentative report
• †Solenochilus
• †Solenopora
• †Spermatodus

• 

  †Sphenacanthus
• †Sphenophyllum
  • †Sphenophyllum oblongifolium
• †Sphenopteris
• †Spica
• †Spirifer
  • †Spirifer rockymontanus
• Spirorbis
• †Stearoceras
• †Steppesaurus – type locality for genus
• †Stereophallodon – type locality for genus
  • †Stereophallodon ciscoensis – type locality for species

• 

  †Stethacanthus
• †Strepsodiscus
• †Strophomena
  • †Strophomena neglecta
• †Syringopora – tentative report
• †Tainoceras
• †Tappenosaurus – type locality for genus
  • †Tappenosaurus magnus – type locality for species
• †Tarphyceras
• †Terebratula – report made of unidentified related form or using admittedly obsolete nomenclature
• †Tersomius – type locality for genus
  • †Tersomius texensis – type locality for species
• †Tesnusocaris – type locality for genus
  • †Tesnusocaris goldichi – type locality for species

• 

  †Tetraceratops – type locality for genus
  • †Tetraceratops insignis – type locality for species
• †Tetrataxis
• †Texoceras
• †Trichasaurus – type locality for genus
  • †Trichasaurus texensis – type locality for species
• †Tricrepicephalus
• †Trimerorhachis
  • †Trimerorhachis greggi – type locality for species
  • †Trimerorhachis insignis – type locality for species
• †Triproetus
• Trochus – report made of unidentified related form or using admittedly obsolete nomenclature
• †Tunstallia – report made of unidentified related form or using admittedly obsolete nomenclature
• Turbo – report made of unidentified related form or using admittedly obsolete nomenclature
• †Varanops
  • †Varanops brevirostris – type locality for species

• 

  †Varanosaurus – type locality for genus
  • †Varanosaurus acutirostris – type locality for species
• †Vidria
• †Waagenina
• †Waagenoceras
• †Waggoneria – type locality for genus
• †Walchia
• †Wattia – type locality for genus
• †Wilkingia
• †Worthenia
• †Wurmiella
  • †Wurmiella excavata
• †Xenacanthus
• †Xyloiulus – tentative report
• Yoldia – tentative report

• 

  †Zatrachys

• 

  †Acanthoceras
  • †Acanthoceras adkinsi
  • †Acanthoceras amphibolum
  • †Acanthoceras barcusi
  • †Acanthoceras eulessanum
  • †Acanthoceras johnsonanum
  • †Acanthoceras tarrantense
  • †Acanthoceras wintoni
  • †Acanthoceras worthense
• Acesta
• Acirsa
• Acmaea
• †Acompsoceras

• 

  †Acrocanthosaurus
  • †Acrocanthosaurus atokensis
• Acteon
• †Acteonella
• †Adelobasileus – type locality for genus
  • †Adelobasileus cromptoni – type locality for species
• †Adkinsia
• †Adocus
• †Aenona
• †Aetodactylus – type locality for genus
  • †Aetodactylus halli – type locality for species
• †Agerostrea
• †Agujaceratops
  • †Agujaceratops mariscalensis – type locality for species
• †Akera

• 

  †Alamosaurus
  • †Alamosaurus sanjuanensis
• †Albanerpeton
  • †Albanerpeton gracilis
  • †Albanerpeton nexuosus
• †Allocrioceras
• Alnus
• †Alphadon
  • †Alphadon halleyi – or unidentified comparable form
• †Ampullina – or unidentified comparable form
• Amusium
• †Anaklinoceras
• †Ancilla
• †Angistorhinus
  • †Angistorhinus grandis
• †Angulomastacator – type locality for genus
  • †Angulomastacator daviesi – type locality for species
• †Anisoceras
• Anomia
• †Anomoeodus
• †Anomotodon
• †Apachesaurus
  • †Apachesaurus gregorii
• Arca
• Architectonica

• 

  †Arganodus
  • †Arganodus dorotheae – type locality for species
• Arrhoges
• †Aspidoceras
• Astarte
• Astrangia
• Astreopora – tentative report
• †Astroconodon – type locality for genus
  • †Astroconodon denisoni – type locality for species
• †Astrodon
  • †Astrodon johnstoni
• †Astrophocaudia – type locality for genus
  • †Astrophocaudia slaughteri – type locality for species
• †Axonoceras

• 

  †Baculites
  • †Baculites aquilaensis - or unidentified loosely related form
  • †Baculites haresi – or unidentified comparable form
  • †Baculites ovatus
  • †Baculites scotti
  • †Baculites tippahensis
• †Baena – report made of unidentified related form or using admittedly obsolete nomenclature
• †Banis
• Barbatia – tentative report
• †Barroisiceras
• †Basilemys
• †Belemnitella
  • †Belemnitella americana
• †Belodon
• †Belonostomus
• †Bernissartia – tentative report
• †Betelgeusia – type locality for genus
  • †Betelgeusia reidi – type locality for species
• †Bostrychoceras
• Botula
  • †Botula carolinensis
  • †Botula conchafodentis

• 

  †Brachauchenius
  • †Brachauchenius lucasi
• Brachidontes
• †Brachychampsa
• †Brachysuchus – type locality for genus
  • †Brachysuchus megalodon – type locality for species
• †Bravoceratops – type locality for genus
  • †Bravoceratops polyphemus – type locality for species

• 

  †Brontopodus – type locality for genus
• Busycon – tentative report
• Cadulus
• Caestocorbula
  • †Caestocorbula crassaplica
  • †Caestocorbula crassiplica
  • †Caestocorbula suffalciata
  • †Caestocorbula terramaria
• Callianassa
• †Calliomphalus
  • †Calliomphalus americanus
• †Calyptosuchus – type locality for genus
  • †Calyptosuchus wellesi – type locality for species
• Calyptraea
• Cancellaria
• Cantharus – tentative report

• 

  †Caprina
• Capulus
• Carcharias
• †Caririchnium
• Carota
• Caryophyllia
• †Caseosaurus – type locality for genus
  • †Caseosaurus crosbyensis – type locality for species
• †Casierius
• †Catactegenys – type locality for genus
• †Caturus
• †Caveola
• †Cedarosaurus
  • †Cedarosaurus weiskopfae

• 

  †Ceratodus
• Cerithiella
  • †Cerithiella nodoliratum – or unidentified related form
  • †Cerithiella semirugatum
• Cerithium
• †Chamops
• †Champsosaurus
• †Chindesaurus
  • †Chindesaurus bryansmalli
• †Chinlea
• †Chirostenotes
• †Chupacabrachelys – type locality for genus
• Cidaris
• †Cimexomys
• †Cimoliasaurus

• 

  †Cimoliopterus
  • †Cimoliopterus dunni – type locality for species
• †Cimolodon
  • †Cimolodon electus – or unidentified comparable form
• †Cimolomys
  • †Cimolomys clarki
• †Clevosaurus – or unidentified comparable form
• †Clidastes
  • †Clidastes liodontus
• Cliona
• †Coahomasuchus – type locality for genus
  • †Coahomasuchus kahleorum – type locality for species
• †Coelodus
• †Coelophysis
• †Coilopoceras
  • †Coilopoceras springeri

• 

  †Collignoniceras
  • †Collignoniceras woollgari
• †Colognathus – type locality for genus
• †Coniasaurus
• †Continuoolithus
• †Conulus
• Corbicula
• Corbula
• †Coupatezia
• Crassostrea
• †Crenella
  • †Crenella elegantula
  • †Crenella serica

• 

  †Cretolamna
  • †Cretolamna appendiculata
• †Cretorectolobus
  • †Cretorectolobus olsoni – or unidentified comparable form
• †Crosbysaurus – type locality for genus
  • †Crosbysaurus harrisae – type locality for species
• Cucullaea
  • †Cucullaea capax
  • †Cucullaea powersi
• Cuspidaria
  • †Cuspidaria ampulla
  • †Cuspidaria grandis
  • †Cuspidaria grovensis
• †Cyathophora
• †Cyclothyris
• Cylichna
  • †Cylichna incisa
• †Cymatoceras
• †Cymella
• Cyzicus – tentative report
• †Dallasaurus – type locality for genus
  • †Dallasaurus turneri – type locality for species
• Dasmosmilia
  • †Dasmosmilia kochii – type locality for species
• Dasyatis

• 

  †Deinosuchus
  • †Deinosuchus riograndensis
  • †Deinosuchus rugosus – type locality for species
• Dentalium
  • †Dentalium leve
  • †Dentalium pauperculum
• †Desmatosuchus
  • †Desmatosuchus haplocerus
  • †Desmatosuchus smalli – type locality for species
  • †Desmatosuchus spurensis – type locality for species
• †Desmoceras
• Diodora – tentative report
• †Diphydontosaurus – or unidentified related form
• †Diploastrea
• Discorbis
• †Discoscaphites
  • †Discoscaphites conradi
• †Doswellia
• †Douvilleiceras
• †Dreissena

• 

  †Dromomeron
  • †Dromomeron gregorii – type locality for species
• †Dryptosaurus
• †Dufrenoyia
  • †Dufrenoyia justinae
• †Durania
• †Echinocorys
• †Ecphora
• †Ectenosaurus
• †Edmontonia – or unidentified comparable form
• †Elea – tentative report

• 

  †Enchodus
• †Episcoposaurus – type locality for genus
  • †Episcoposaurus haplocerus – type locality for species
• †Epitonium
  • †Epitonium sillimani
• †Eubostrychoceras
• †Eucalycoceras
• †Eugyra
• †Euhoplites – tentative report
• †Eulima
• †Euomphaloceras
• †Eupachydiscus
• †Euspira
• †Eutrephoceras
• †Ewingia – type locality for genus

• 

  †Exogyra
  • †Exogyra cancellata
  • †Exogyra costata
• †Fagesia
• †Faujasia
• †Favia
• †Flexomornis – type locality for genus
  • †Flexomornis howei – type locality for species
• †Flickia
• †Forbesiceras
• †Forresteria
• Fusinus
• Galeorhinus
• Gastrochaena
• Gegania
• †Gervillia
• Ginglymostoma

• 

  †Globidens
  • †Globidens dakotensis
• Globigerina
• Glossus
• Glycymeris
  • †Glycymeris rotundata
• †Glyptops – tentative report
• †Gobiates
• †Gryphaea
• †Gryposaurus – tentative report
• †Gypsichnites
• †Gyronchus
• Haminoea – tentative report
• †Hamites
• †Hamulus
• †Helicoceras
  • †Helicoceras navarroense
• †Hemicalypterus – tentative report

• 

  Heterodontus
• †Heteromorpha
• Hexanchus
• Homarus
• †Hoplochelys
• †Hoploscaphites
• †Hybodus
• †Hydnophora – tentative report
• †Hypophylloceras
• †Ichthyodectes

• 

  †Ichthyornis
  • †Ichthyornis dispar
• †Idoceras
• †Iguanodon – or unidentified comparable form
• †Inoceramus
  • †Inoceramus anomalus – or unidentified comparable form
  • †Inoceramus arnoldi
  • †Inoceramus arvanus
  • †Inoceramus balticus
  • †Inoceramus cordiformis – or unidentified comparable form
  • †Inoceramus deformis
  • †Inoceramus dimidius
  • †Inoceramus fragilis
  • †Inoceramus prefragilis
  • †Inoceramus vanuxemi – tentative report
• †Irenesauripus
• †Isastrea
• †Ischyrhiza
  • †Ischyrhiza avonicola
  • †Ischyrhiza mira
• †Jeletzkytes
  • †Jeletzkytes brevis
• †Kamerunoceras

• 

  †Koskinonodon – type locality for genus
• †Kritosaurus
• Lamna
• Latiaxis
• †Lepidotes
• Lepisosteus
• †Leptorhynchos – type locality for genus
  • †Leptorhynchos gaddisi – type locality for species
• †Leptostyrax
• †Leptosuchus
  • †Leptosuchus crosbiensis – type locality for species
  • †Leptosuchus imperfecta – type locality for species
  • †Leptosuchus studeri – type locality for species
• †Lewesiceras
• †Leyvachelys
  • †Leyvachelys cipadi
• †Libognathus – type locality for genus

• 

  †Libonectes
  • †Libonectes morgani – type locality for species
• Lima
• Limatula
• †Linearis
• Lingula
• †Linter
• †Linthia
• Linuparus
• †Lioestheria – tentative report
• Liquidambar – tentative report
• †Lissodus
• †Lithacoceras
• Lithophaga
• †Lonchidion

• 

  †Longosuchus
  • †Longosuchus meadei – type locality for species
• Lopha
  • †Lopha falcata
  • †Lopha mesenterica
• †Lucasuchus – type locality for genus
  • †Lucasuchus hunti – type locality for species
• Lucina
• †Macrepistius
• †Magnoavipes – type locality for genus
• †Malerisaurus

• 

  †Mammites
• †Mantelliceras
  • †Mantelliceras cantianum
• †Mariella
• †Martinectes
  • †Martinectes bonneri
• †Mathilda
• Megalomphalus – or unidentified comparable form
• †Megalosauropus – tentative report
• Melanatria
• Membranipora
• †Meniscoessus
• †Menuites
• Mesalia
• †Mesodma
• †Metoicoceras
  • †Metoicoceras geslinianum

• 

  †Metoposaurus
  • †Metoposaurus bakeri – type locality for species
• †Micraster
• †Modiolus
  • †Modiolus sedesclaris
  • †Modiolus sedesclarus
• Monodonta – tentative report
• †Monopleura – tentative report
• †Morea
• †Mortoniceras

• 

  †Mosasaurus
  • †Mosasaurus missouriensis – tentative report
• †Mytilus
• †Naomichelys
• Natica
• Nebrius
• †Neithea
  • †Neithea bexarensis
  • †Neithea quinquecostata
• †Neocardioceras
  • †Neocardioceras juddii

• 

  †Neohibolites
• †Neoptychites
• †Nerinea – tentative report
• Nerita
• Neritina
• †Nostoceras
  • †Nostoceras approximans
  • †Nostoceras splendidum
• Nucula
  • †Nucula camia
  • †Nucula cuneifrons
  • †Nucula percrassa
• †Nyssa
• †Odaxosaurus
  • †Odaxosaurus piger
• Odontaspis
• †Oklatheridium
  • †Oklatheridium minax
  • †Oklatheridium szalayi

• 

  †Onchopristis
• †Onchosaurus
• †Ophiomorpha
• †Ophiopsis – tentative report
• †Opis
• †Ornithomimus
• †Ostlingoceras
• Ostrea
• †Otischalkia – type locality for genus
  • †Otischalkia elderae – type locality for species
• †Oxyrhina
• †Pachycheilosuchus – type locality for genus
  • †Pachycheilosuchus trinquei – type locality for species
• †Pachydesmoceras
• †Pachydiscus

• 

  †Pachygenelus
• †Pachymelania
• Pagurus
• †Palaeobalistum
• †Palaeoctonus
• †Paleorhinus
  • †Paleorhinus sawini – type locality for species
• †Paluxysaurus – type locality for genus. Now regarded as a junior synonym of Sauroposeidon.^{[citation needed]}
  • †Paluxysaurus jonesi – type locality for species. Now regarded as a junior synonym of Sauroposeidon proteles.^{[citation needed]}
• †Paluxysuchus – type locality for genus
  • †Paluxysuchus newmani – type locality for species
• †Panis
• Panopea
• †Pappotherium – type locality for genus
• †Paracimexomys
• †Paramicrodon – type locality for genus
• †Paranomia

• 

  †Parapuzosia
• †Parasuchus
• †Paratypothorax
• †Paronychodon
  • †Paronychodon lacustris – or unidentified comparable form
• †Pawpawsaurus – type locality for genus
  • †Pawpawsaurus campbelli – type locality for species
• †Pecten
• †Pekinosaurus – or unidentified related form
  • †Pekinosaurus olseni
• Perna – report made of unidentified related form or using admittedly obsolete nomenclature
• Pholadidea

• 

  Pholadomya
  • †Pholadomya occidentalis
• Pholas
• †Phymosoma
• †Phytosaurus
• †Pinna
• Pitar
• †Placenticeras
  • †Placenticeras meeki
• †Planocephalosaurus
• †Platecarpus
  • †Platecarpus planifrons
  • †Platecarpus somenensis – or unidentified comparable form
  • †Platecarpus tympaniticus
• †Platyceramus
  • †Platyceramus cycloides
  • †Platyceramus mantelli - or unidentified loosely related form

• 

  †Platypterygius
• †Plesiosaurus
• Pleurotomaria
• †Plicatoscyllium – type locality for genus
• Plicatula
• †Plioplatecarpus – tentative report
• Polinices
• †Pollex
• †Polyptychodon
• †Poposaurus
  • †Poposaurus gracilis
• †Porituberoolithus

• 

  †Postosuchus – type locality for genus
  • †Postosuchus kirkpatricki – type locality for species
• †Procardia
• †Prognathodon – tentative report
• †Promystriosuchus – type locality for genus
• †Prosiren – type locality for genus
• †Protecovasaurus – type locality for genus
  • †Protecovasaurus lucasi – type locality for species
• †Protoavis – type locality for genus
  • †Protoavis texensis – type locality for species
• †Protocardia
• †Protohadros – type locality for genus
  • †Protohadros byrdi – type locality for species

• 

  †Protosphyraena
• †Pseudocorax
• †Pseudomelania
• †Pseudoperna
  • †Pseudoperna congesta
• †Pteranodon – or unidentified comparable form
• †Pteria
• †Pterotrigonia
  • †Pterotrigonia eufalensis
  • †Pterotrigonia eufaulensis
• †Ptychotrygon
• †Puzosia
• Pycnodonte
  • †Pycnodonte belli
  • †Pycnodonte mutabilis
  • †Pycnodonte vesicularis

• 

  †Quetzalcoatlus – type locality for genus
  • †Quetzalcoatlus northropi – type locality for species
• †Quitmaniceras
• Raja
• †Rewaconodon – or unidentified related form
  • †Rewaconodon tikiensis
• Rhinobatos
• †Rhombodus
• †Richardoestesia
  • †Richardoestesia gilmorei
  • †Richardoestesia isosceles – type locality for species
• †Rileymillerus – type locality for genus
• Ringicula
  • †Ringicula pulchella
• Rogerella
• †Romaniceras
• Rostellaria – tentative report
• †Russellosaurus – type locality for genus
  • †Russellosaurus coheni – type locality for species
• †Rutiodon
• †Sargana

• 

  †Sauroposeidon
  • †Sauroposeidon proteles
• †Saurornitholestes
  • †Saurornitholestes langstoni – or unidentified comparable form
• †Sauvagesia – tentative report
• †Scapanorhynchus
  • †Scapanorhynchus texanus
• †Scapherpeton
• †Scaphites
  • †Scaphites hippocrepis - or unidentified loosely related form
  • †Scaphites warreni
• †Schizobasis
• Scintilla – tentative report
• †Sclerorhynchus
• Scyliorhinus
• †Selaginella – or unidentified comparable form
• †Seminola – tentative report
• †Semionotus – or unidentified comparable form
• †Senis
• Serpula
• †Serratolamna
  • †Serratolamna serrata
• †Sexta

• 

  †Shuvosaurus – type locality for genus
  • †Shuvosaurus inexpectatus – type locality for species
• †Siderastrea
• †Sierritasuchus – type locality for genus
  • †Sierritasuchus macalpini – type locality for species
• †Skolithos
• Solemya
• †Sphenodiscus
  • †Sphenodiscus lobatus
  • †Sphenodiscus pleurisepta
• †Spinosuchus – type locality for genus
  • †Spinosuchus caseanus – type locality for species
• †Spironema
• Spondylus
• Squalicorax
  • †Squalicorax kaupi
  • †Squalicorax pristodontus
• Squalus
• †Squatirhina
  • †Squatirhina americana

• 

  †Struthiomimus – or unidentified comparable form
• †Technosaurus – type locality for genus
  • †Technosaurus smalli – type locality for species
• †Tecovasaurus – type locality for genus
  • †Tecovasaurus murryi – type locality for species
• †Tecovasuchus – type locality for genus
  • †Tecovasuchus chatterjeei – type locality for species
• Teinostoma
• Tellina
• †Tenea

• 

  †Tenontosaurus
  • †Tenontosaurus dossi – type locality for species
• Teredolites
• †Terlinguachelys – type locality for genus
  • †Terlinguachelys fischbecki – type locality for species
• †Terminonaris
  • †Terminonaris robusta – or unidentified comparable form
• †Texacephale – type locality for genus
  • †Texacephale langstoni – type locality for species
• †Texasetes – type locality for genus
  • †Texasetes pleurohalio – type locality for species
• Textularia
• †Thamnasteria
• †Thamnoseris – tentative report
• †Thomasites
• Trachycardium
  • †Trachycardium eufaulensis

• 

  †Triceratops
• †Trigonia
• †Trilophosaurus – type locality for genus
  • †Trilophosaurus buettneri – type locality for species
  • †Trilophosaurus jacobsi
• †Trinacromerum – type locality for genus
  • †Trinacromerum bentonianum – type locality for species
• †Triodus
• †Triopticus – type locality for genus
• †Trochactaeon
• Tryonia

• 

  †Turrilites
  • †Turrilites acutus
• Turritella
  • †Turritella bilira
  • †Turritella forgemoli – or unidentified comparable form
  • †Turritella hilgardi
  • †Turritella paravertebroides
  • †Turritella trilira
  • †Turritella vertebroides
• †Tylosaurus
  • †Tylosaurus kansasensis
  • †Tylosaurus nepaeolicus
  • †Tylosaurus proriger – or unidentified comparable form
• †Typothorax

• 

  †Tyrannosaurus
  • †Tyrannosaurus rex
• †Uktenadactylus
• Unio
• †Upogebia
• †Vancleavea
  • †Vancleavea campi
• †Vascellum
• †Vascoceras
• Venericardia
• †Vinella
• Viviparus – tentative report
• Volsella
• Vulsella

• 

  †Wannchampsus – type locality for genus
• †Wannia
  • †Wannia scurriensis – type locality for species
• †Woodbinesuchus – type locality for genus
  • †Woodbinesuchus byersmauricei – type locality for species
• †Wrightoceras
• Xanthosia
• †Xenacanthus – report made of unidentified related form or using admittedly obsolete nomenclature
• Xenophora
• †Xiphactinus
• †Yezoites
• Yoldia

• Abra
• Acanthocardia
• Acar
• Acirsa
• †Aclistomycter
• Acris
  • †Acris crepitans
• Acteocina
• Acteon
• Admetula
• Adrana
• Aedes
• †Aelurodon

• 

  †Aepycamelus
• Agaronia
• Agkistrodon
• †Agriocharis
• †Agriochoerus
• †Agriotherium
• †Aguascalientia
• Akera
• †Alforjas
• Aliculastrum
• †Allaeochelys – or unidentified comparable form
• Alligator
  • †Alligator mississipiensis
  • †Alligator mississippiensis
  • †Alligator olseni

• 

  †Allognathosuchus
• †Allomorone
• Alvania
• †Amblema
  • †Amblema plicata
• †Ambystoma
  • †Ambystoma tigrinum
• †Amebelodon
• †Ameiurus
• Amnicola
• †Amphicyon
• †Amphimachairodus
• Amphiuma
• †Ampullina
• Amusium
• Anadara

• 

  †Anancus
• †Anchitheriomys
• †Anchitherium
• Ancilla
• †Angelarctocyon
  • †Angelarctocyon australis – type locality for species
• †Annona
• Anodontia
• Anomia
• Antalis
• Anthonomus – tentative report
• Antillophos
• Antrozous
  • †Antrozous pallidus
• †Aphelops
• †Aplexia
• Aplodinotus
  • †Aplodinotus grunniens
• Aquila
  • †Aquila chrysaetos
• Arca
• †Archaeohippus
• †Archaeotherium
• Architectonica
• †Arctocyon

• 

  †Arctodus
  • †Arctodus simus
• †Arctonasua
• Argobuccinum
• Argyrotheca
• Arius – or unidentified comparable form
• Arizona
  • †Arizona elegans
• †Artocarpus
• Astarte
• Asthenotoma
• †Astrohippus
• Athleta
• Atlanta
• Atractosteus
  • †Atractosteus spatula
  • †Atractosteus tristoechus – tentative report
• Atrina

• 

  †Aturia
• Atys
• †Australocamelus
• †Awateria
• Baiomys
• †Baiotomeus
  • †Baiotomeus douglassi
• Balanophyllia
• Balanus
• †Baluchicardia
• Bankia
• Barbatia
• †Barbourofelis
  • †Barbourofelis whitfordi
• Bassariscus
• †Bathygenys
• Bathytoma
  • †Bathytoma nonplicata – or unidentified comparable form
• †Batrachosauroides
• Bela – report made of unidentified related form or using admittedly obsolete nomenclature
• †Belosaepia
• †Belosepia
• Bison
  • †Bison antiquus

  • 

    †Bison latifrons
• Bittiolum – report made of unidentified related form or using admittedly obsolete nomenclature
• Bittium
• †Blancocamelus
• Blarina
  • †Blarina brevicauda – or unidentified comparable form
• †Blastomeryx
• †Boavus – tentative report
• †Bonellitia
• †Borealosuchus

• 

  †Borophagus
  • †Borophagus diversidens
  • †Borophagus hilli – type locality for species
  • †Borophagus pugnator – or unidentified comparable form
  • †Borophagus secundus
• †Boverisuchus
  • †Boverisuchus vorax – or unidentified comparable form
• Brachidontes
• †Brachyhyops
• †Brachyrhynchocyon
• Bregmaceros
• †Bryozoan
• Bufo
  • †Bufo cognatus
  • †Bufo woodhousei
• Bulimulus
  • †Bulimulus dealbatus
• Bullia
• Cadulus
• Caecum – or unidentified comparable form
• Caestocorbula
• †Calappilia
• †Calippus
• Callianassa
• Calyptraea

• 

  †Camelops
  • †Camelops hesternus – type locality for species
  • †Camelops minidokae
• Cancellaria
• Candona
• Canis
  • †Canis armbrusteri
  • †Canis dirus
  • †Canis edwardii
  • †Canis latrans
  • †Canis lepophagus – type locality for species
• Cantharus

• 

  †Capromeryx
• Capulus
• Carapus
• Carcharhinus
• †Carpocyon
• Carychium
  • †Carychium exiguum
• Caryophyllia
• Castor
  • †Castor canadensis
• Catagonus
• †Caveola
• Celtis
• Centropomus – tentative report

• 

  †Ceratogaulus
  • †Ceratogaulus anecdotus – or unidentified comparable form
• †Cerdocyon
• Cerithiella
• Cerithiopsis
• Cerithium – tentative report
• Chaetodipus
  • †Chaetodipus hispidus
• Chama
• Charina
• †Charophyte

• 

  †Chasmaporthetes
• Chironomus
• Chlamys
• †Chriacus
• †Cimolodon
• Cirsotrema
• Cissus
• Clavilithes
• Clavus – tentative report
• Closia
• Clypeaster
• Cochlespira
• Cochliolepis
• †Colodon
• Coluber

  • 

    †Coluber constrictor
• Colubraria
• Columbella – report made of unidentified related form or using admittedly obsolete nomenclature
• †Colwellia
• †Combretum
• Cominella – or unidentified comparable form
• Conomitra
• Conus
• Corbicula
• Corbula
• †Cormohipparion
• †Corvina
• Corvus
  • †Corvus brachyrhynchos
• †Coryphodon

• 

  †Cranioceras
• Crassostrea
  • †Crassostrea contracta
• Cratogeomys
  • †Cratogeomys castanops
• Crenella
• †Cristellaria
• Crotalus
  • †Crotalus atrox
  • †Crotalus horridus
• Crotaphytus
  • †Crotaphytus collaris
  • †Crotaphytus reticulatus
• Cryptotis
  • †Cryptotis parva
• Cucullaea
• Culex
• Cuna
• Cuspidaria
  • †Cuspidaria grandis

• 

  †Cuvieronius
• Cyclammina
• Cylichna
• †Cylindracanthus
• Cyllene – or unidentified comparable form
• †Cynarctoides
• †Cynarctus
• Cynomys
  • †Cynomys ludovicianus
• Cypraea
• Cypraedia
• Cythara
• †Daphoenictis

• 

  †Daphoenodon
• †Daphoenus
  • †Daphoenus lambei – or unidentified comparable form
• Dasyatis
• Dasypus
  • †Dasypus bellus
• Dentalium
• Dermatemys
• †Desmatippus
• †Diaphyodus
• †Dibelodon
• †Diceratherium
• Didelphis
  • †Didelphis marsupialis
• †Dinofelis
• †Dinohippus
• †Dinohyus
  • †Dinohyus hollandi
• Diplotaxis – or unidentified comparable form
• Dipodomys
  • †Dipodomys merriami
  • †Dipodomys ordii
  • †Dipodomys spectabilis
• †Discradisca
• Disonycha
• †Dolicholatirus
• Dorsanum

• 

  †Duchesneodus
• †Echmatemys
• Elaphe
  • †Elaphe guttata
  • †Elaphe obsoleta
• Eleutherodactylus
  • †Eleutherodactylus augusti
• †Ellisella
• Emarginula – or unidentified comparable form
• Endochironomus
• †Eomellivora
• †Eosurcula
• Epicauta

• 

  †Epicyon
  • †Epicyon haydeni
• †Epihippus
• Epitonium
• Eptesicus
  • †Eptesicus fuscus
• Equus
  • †Equus alaskae – or unidentified comparable form
  • †Equus conversidens
  • †Equus francisci – type locality for species
  • †Equus giganteus
  • †Equus idahoensis
  • †Equus scotti – type locality for species
  • †Equus semiplicatus

  • 

    †Equus simplicidens
  • †Equus occidentalis
• Erethizon
  • †Erethizon dorsatum
• †Eucyon
  • †Eucyon davisi
• Eulima
• Eumeces
  • †Eumeces fasciatus
  • †Eumeces obsoletus
• †Euonymus
• Eupleura
• Euspira
• †Eutrephoceras
• †Exilia
• Fasciolaria – tentative report
• Felis
• †Ficopsis

• 

  Ficus
• Flabellum
• †Floridachoerus – tentative report
• †Floridatragulus
• Formica
• Fossaria
• Fulgurofusus
• †Fusconaia
• Fusinus
• Fustiaria
• Gadila
• Galeocerdo
• Galeodea
• Gastrocopta
  • †Gastrocopta armifera
  • †Gastrocopta contracta
  • †Gastrocopta pellucida
  • †Gastrocopta pentodon
• †Gavialosuchus
• Gegania
• Geochelone
• Geomys
  • †Geomys bursarius
• †Gigantocamelus
• †Glossotherium
• Glycymeris
• Glyptoactis
• †Glyptotherium
  • †Glyptotherium texanum
• Glyptozaria
• †Gnathabelodon
• †Gomphotherium
• †Goniobasis
• Gopherus – type locality for genus
  • †Gopherus polyphemus – type locality for species
• Graptemys
  • †Graptemys geographica
• Gregariella
• †Gulfoceras
• †Gustafsonia
• Guttulina
• Gyraulus
  • †Gyraulus parvus
• †Hadrianus

• 

  †Haplohippus
• Harpa
• †Harpactocarcinus
• †Harpagolestes
• Hastula
• Haustator
• Hawaiia
  • †Hawaiia minuscula

• 

  †Hayoceros
• Helicina
  • †Helicina orbiculata
• Helicodiscus
  • †Helicodiscus parallelus
• Helisoma
  • †Helisoma anceps
  • †Helisoma trivolvis
• Heloderma
• †Hemiauchenia
  • †Hemiauchenia macrocephala
• †Herpetotherium
• †Hesperotestudo
• †Heteraletes
• Heterodon

  • 

    †Heterodon nasicus – or unidentified comparable form
  • †Heterodon platyrhinos – or unidentified comparable form
• †Heteromeryx
• Hexaplex
• †Hipparion
• †Hippidion
• Hippodamia
  • †Hippodamia convergens – tentative report
• Hipponix
• †Hippotherium
• Holbrookia
• †Holmesina

• 

  †Homotherium
  • †Homotherium serum
• †Hyaenodon
  • †Hyaenodon crucians
  • †Hyaenodon horridus – or unidentified comparable form
  • †Hyaenodon montanus
  • †Hyaenodon raineyi
  • †Hyaenodon vetus – or unidentified comparable form
• Hyla
• †Hyopsodus
• Hyotissa
• †Hypertragulus
• †Hypohippus
• †Hypolagus
• †Hyrachyus
• †Hyracodon
• †Hyracotherium
  • †Hyracotherium vasacciense
• Ictalurus
  • †Ictalurus punctatus
• †Ictiobus

• 

  †Indarctos
• †Inga
• †Ischyrocyon
• †Ischyromys
• Isognomon
• †Jefitchia – type locality for genus
• Juglans
• †Kalobatippus
• Kinosternon
  • †Kinosternon flavescens
• Kuphus
• †Lacunaria
• †Lambdoceras
• †Lambertocyon
  • †Lambertocyon eximius

• 

  Lampropeltis
  • †Lampropeltis getulus
  • †Lampropeltis triangulum
• Lasionycteris
  • †Lasionycteris noctivagans
• Lasiurus
  • †Lasiurus borealis
• Latirus
• †Ledina
• †Leea
• Lepisosteus
  • †Lepisosteus spatula – or unidentified comparable form
• Lepomis
  • †Lepomis cyanellus – or unidentified comparable form
• †Leptictis

• 

  †Leptocyon
• †Leptoreodon
• Lepus
  • †Lepus californicus
• Limacina
• Limaria
• †Limnenetes
• †Linthia
• Lithophaga
• Litiopa
• Littorina
• †Longirostromeryx

• 

  Lovenia
• Lucina
• Lunatia – report made of unidentified related form or using admittedly obsolete nomenclature
• Lunularia – tentative report
• Lymnaea
• Lynx
  • †Lynx rufus
• Lyria
• Lytta
• †Machairodus
• Macrocallista
• Mactra
• Madrepora
• Magnolia
• †Mahgarita
• †Mammut
  • †Mammut americanum
• †Mammuthus

  • 

    †Mammuthus columbi
• Marginella
• Marmota
  • †Marmota flaviventris
• Martes
• Martesia
• †Mathilda – tentative report
• †Mathilda – or unidentified comparable form
• †Mathilda
• †Mauricia
• †Megalictis – tentative report
• †Megalonyx
  • †Megalonyx jeffersonii – or unidentified comparable form
  • †Megalonyx leptostomus

• 

  †Megatherium
• †Megatylopus
• Melanella
• †Menetus
• †Menoceras
• †Menops
• Mephitis
  • †Mephitis mephitis
• Meretrix
• †Merychippus
  • †Merychippus sejunctus
• †Merychyus

• 

  †Merycoidodon
• Mesalia
• †Mescalerolemur – type locality for genus
  • †Mescalerolemur horneri – type locality for species
• Mesodesma
• †Mesodma
  • †Mesodma pygmaea – or unidentified comparable form
  • †Mesodma thompsoni
• †Mesohippus
• †Metalopex

• 

  †Metamynodon
• Metula
• †Michela
• †Michenia
• Microdrillia
• Micropterus
• †Microsyops
• †Microtomarctus
• Microtus
  • †Microtus mexicanus
  • †Microtus pennsylvanicus
  • †Microtus pinetorum
• Micrurus
  • †Micrurus fulvius
• †Mimetodon
• †Miocyon
• †Miohippus
• †Miracinonyx
  • †Miracinonyx inexpectatus – or unidentified comparable form
  • †Miracinonyx studeri
• Mitrella
• †Mixotoxodon
• Modiolus – tentative report
• †Moropus
• †Morrillia
• Murex
• Mustela
  • †Mustela vison
• Myctophum
• Myliobatis
• †Mylohyus
  • †Mylohyus fossilis
• Myotis
  • †Myotis lucifugus
  • †Myotis velifer
• Mytilus
• Myzinum – or unidentified comparable form

• 

  †Nannippus
• †Nanotragulus
• Narona
• Nassarius
• Nasua
• Natica
• Naticarius
• Natrix
  • †Natrix erythrogaster
• Nectandra
• †Neochoerus – type locality for genus
  • †Neochoerus pinckneyi
• Neofiber

• 

  †Neohipparion
• Neotamias
  • †Neotamias cinereicollis
• Neotoma
  • †Neotoma albigula
  • †Neotoma floridana
  • †Neotoma mexicana
  • †Neotoma micropus
• Neptunea – report made of unidentified related form or using admittedly obsolete nomenclature
• Nerodia
  • †Nerodia fasciata
• Neverita
• †Nexuotapirus
• †Nimravides
• Niptus
• Norrisia
• †Notharctus
  • †Notharctus tenebrosus
• †Nothokemas

• 

  †Nothrotheriops
• †Nothrotherium
• Notiosorex
  • †Notiosorex crawfordi
• †Notiotitanops
• Notophthalmus
• Nucula
• Nysius – tentative report
• Oculina
• Odocoileus
  • †Odocoileus virginianus

• 

  Odontaspis
• Odostomia
• Olivella
• Ondatra
  • †Ondatra zibethicus
• Onychomys
  • †Onychomys leucogaster
  • †Onychomys torridus
• Opalia
• Opheodrys
  • †Opheodrys aestivus
• Ophisaurus
• †Oreodaphne
• Oryzomys
  • †Oryzomys palustris

• 

  †Osbornoceros – tentative report
• Ostrea
• Ovis
  • †Ovis canadensis
• †Oxydactylus
• †Pachecoa
• †Palaeolama
• †Palaeophis
• Panopea
• Panthera
  • †Panthera leo
  • †Panthera onca
• †Paraenhydrocyon
• †Parahippus
  • †Parahippus leonensis – type locality for species
• †Paralbula

• 

  †Paramylodon
  • †Paramylodon harlani
• †Paramys
• †Paratoceras
• †Paratomarctus
• †Parectypodus
  • †Parectypodus sloani
• †Paronychomys – tentative report
• †Parvitragulus
• †Pediomeryx

• 

  †Peltosaurus – tentative report
• †Peraceras
• †Peratherium
• Perognathus
  • †Perognathus flavus
• Peromyscus
  • †Peromyscus boylii
  • †Peromyscus difficilis
  • †Peromyscus eremicus
  • †Peromyscus gossypinus
  • †Peromyscus leucopus
  • †Peromyscus maniculatus
  • †Peromyscus pectoralis
• Phaedon – or unidentified comparable form
• Phalium
• †Phenacodus
• Philine

• 

  †Phlaocyon
  • †Phlaocyon annectens
  • †Phlaocyon minor
• Pholadomya
• Pholas
• Phos
• Phrynosoma
  • †Phrynosoma cornutum
• Phyllodus
• Physa
• Pinna – tentative report
• Pisidium
  • †Pisidium nitidum
• Pitar
• Pituophis
  • †Pituophis melanoleucus
• Planorbis

• 

  †Platygonus
  • †Platygonus compressus
• †Pleiolama
• †Plesiocolopirus
• †Plesiogulo
• Pleurocera
• Pleurofusia
• Pleuromeris
• Pleuroploca
• †Pleurostoma
• Pleurotomella
• Plicatula

• 

  †Pliohippus
• †Pliometanastes
• †Poabromylus
• Podomys
• †Poebrotherium
• Polinices
• Polydora
• Polygyra
• Polyschides
• Porites
• †Potamides
• †Priscocamelus
• †Pristichampsus
• Pristis
• †Procamelus
  • †Procamelus leptognathus
  • †Procamelus occidentalis
• †Procastoroides
• †Procynodictis
• Procyon
  • †Procyon lotor
• †Prohesperocyon
  • †Prohesperocyon wilsoni
• Propeamussium
• †Prosimnia
• †Prosynthetoceras
• †Protitanotherium
• †Protoceras – tentative report
• †Protohippus
• †Protolabis
• †Protylopus – tentative report
• Pseudacris
  • †Pseudacris ocularis
  • †Pseudacris streckeri

• 

  †Pseudaelurus – tentative report
• †Pseudhipparion
• Pseudochama
• Pseudoliva
• †Pseudoprotoceras
• †Psittacotherium
• Pteria
• Pteris
• Pterothrissus
• Pterynotus

• 

  †Ptilodus
  • †Ptilodus mediaevus
• Ptinus
• Puma
  • †Puma concolor
• Pupilla
  • †Pupilla blandi
• Pupoides
• Pycnodonte
• †Pylodictis
  • †Pylodictis olivaris
• Pyramidella
• †Quadrula
• Quinqueloculina
• †Raja
  • †Raja texana – type locality for species
• †Rana

  • 

    †Rana catesbiana – lapsus calami of Rana catesbeiana
  • †Rana pipiens
• Ranularia
• Raphitoma
• Reithrodontomys
  • †Reithrodontomys fulvescens
  • †Reithrodontomys megalotis
  • †Reithrodontomys montanus
• †Retinella
• Retusa
• Rhinobatos
• Rhinocheilus
  • †Rhinocheilus lecontei
• Rhinoptera

• 

  †Rhynchotherium – tentative report
• Rimella
• Ringicula
• †Rooneyia – type locality for genus
  • †Rooneyia viejaensis – type locality for species
• †Rotalia
• †Rotularia
• Salvadora
• †Sapindus
• Sassia
• Scalopus
  • †Scalopus aquaticus
• Scaphander
• Scaphella

• 

  Scaphiopus
• †Scaphites
• Sceloporus
  • †Sceloporus olivaceus
  • †Sceloporus undulatus
• Sciurus
  • †Sciurus carolinensis
  • †Sciurus niger
• †Selaginella
• Selenophorus – or unidentified comparable form
• Semele
• Serpulorbis
• Sigatica
• Sigmodon

  • 

    †Sigmodon hispidus
• Siliqua
• Simnia
• †Sinopa
• Sinum
• Siphonalia
• Siren
  • †Siren miotexana – type locality for species
• Skena
• Skenea

• 

  †Smilodon
  • †Smilodon fatalis
• †Soergelia
  • †Soergelia mayfieldi
• Solariella
• Solemya
• Solen
• †Sophora
• Sorex
  • †Sorex cinereus
  • †Sorex palustris
  • †Sorex vagrans
• Spermophilus
  • †Spermophilus elegans – or unidentified comparable form

  • 

    †Spermophilus spilosoma
  • †Spermophilus tridecemlineatus
  • †Spermophilus variegatus
• Sphaerium
• Spilogale
  • †Spilogale putorius
• Spirorbis
• Spirotropis
• Spisula
• Stagnicola
  • †Stagnicola reflexa

• 

  †Stegomastodon
  • †Stegomastodon mirificus
• †Steneofiber
• †Stenomylus
• †Stenotrema
• Sternotherus
• Sthenictis
• †Stockoceros – or unidentified comparable form
• Storeria
  • †Storeria dekayi
• †Striatolamia
• Strobilops
• †Stygimys

• 

  †Stylinodon
• Succinea
• Sylvilagus
  • †Sylvilagus audubonii
  • †Sylvilagus floridanus
• Synaptomys
  • †Synaptomys cooperi
• †Synthetoceras
  • †Synthetoceras tricornatus – type locality for species
• Syrphus – or unidentified comparable form
• Tantilla
• Tanytarsus – tentative report
• Tapirus
  • †Tapirus veroensis
• Taxidea
  • †Taxidea taxus
• Teinostoma

• 

  †Teleoceras
  • †Teleoceras major
• Tellina
• Tenagodus
• †Tephrocyon
• Terebellum
• Terebra
• Teredo
• Terminalia
• Terrapene

  • 

    †Terrapene carolina
  • †Terrapene ornata
• Testudo
• †Tetrameryx
• Thamnophis
  • †Thamnophis proximus
  • †Thamnophis saurita
  • †Thamnophis sirtalis
• Theodoxus
• †Thinobadistes
• Thomomys
  • †Thomomys bottae
  • †Thomomys talpoides – or unidentified comparable form
• †Ticholeptus

• 

  †Titanoides
  • †Titanoides gidleyi – or unidentified comparable form
• †Tomarctus
  • †Tomarctus brevirostris
• †Toromeryx
• †Trigonias – tentative report
• Trigonostoma
• †Trinacria
• †Tripia
• Trochita
• Tropidoclonion
  • †Tropidoclonion lineatum
• †Truncilla
  • †Truncilla truncata
• †Trygon
• †Tuba
• Tucetona
• Turbonilla
• Turricula
• Turris
• Turritella
• Tympanuchus
• Typhina
• Tyto
  • †Tyto alba

• 

  †Uintatherium – or unidentified comparable form
  • †Uintatherium anceps
• Umbraculum
• Unio
• Urocyon
  • †Urocyon cinereoargenteus – or unidentified comparable form
• Ursus
  • †Ursus americanus
• †Ustatochoerus
• Vallonia
  • †Vallonia gracilicosta
  • †Vallonia parvula
• Venericardia
• Verticordia
• Vertigo
  • †Vertigo ovata
• †Viridomys
• †Volvariella
• Vulpes
  • †Vulpes velox
  • †Vulpes vulpes

• 

  †Xenocyon
• Xenophora
• Yoldia
• †Yumaceras
• Zonitoides
  • †Zonitoides arboreus

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