List of the prehistoric life of Texas facts for kids

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.

Precambrian

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

Paleozoic

Selected Paleozoic taxa of Texas

• 

  Restoration of the Permian amphibian Acheloma
  †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
• 

  Fossilized shell of the Carboniferous-modern scallop Amusium
  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
• 

  Life restoration of the Permian reptile Araeoscelis
  †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
• 

  Mold fossil of a shell of the Early Devonian-Late Triassic bivalve Aviculopecten
  †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
• 

  Illustration of a fossilized skull of the Permian primitive reptile Bolosaurus
  †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
• 

  Life restoration of the Permian amphibian Cacops
  †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
• 

  Life restoration of the Permian synapsid (mammal precursor) Casea
  †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
• 

  Fossilized shell of the Middle Devonian-Permian brachiopod Cleiothyridina
  †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
• 

  Fossilized shell of the Late Devonian-Permian brachiopod Composita
  †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
• 

  Life restoration of the Permian synapsid (mammal precursor) Cotylorhynchus
  †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
• 

  Restoration of D. giganhomogenes with exposed neural spine tips
  †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
• 

  Life restoration of the Permian synapsid (mammal precursor) Edaphosaurus
  †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
• 

  Life restoration of the Carboniferous-Permian amphibian Eryops
  †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
• 

  Life restoration of the Permian frog precursor Gerobatrachus
  †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
• 

  Life restoration of the Permian Chimaera relative Helicoprion
  †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
• 

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

  Life restoration of the Permian snake-like amphibian Lysorophus showing speculative egg-coiling behavior
  †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
• 

  Life restoration of the Permian synapsid (mammal precursor) Mycterosaurus
  †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
• 

  Fossilized shell of the Carboniferous-Permian brachiopod Neospirifer
  †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
• 

  Life restoration of the Carboniferous-Permian synapsid (mammal precursor) Ophiacodon
  †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
  †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
• 

  Fossils of the Late Devonian-Permian fern-like fronds Pecopteris
  †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
• 

  Life restoration of the Carboniferous-Permian sail-backed amphibian Platyhystrix
  †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
• 

  Life restoration of the Devonian-Permian tree fern Psaronius. Auguste Faguet (1877).
  †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
• 

  Life restoration of the Permian amphibian Rubeostratilia
  †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
• 

  Fossilized skeleton of the Permian primitive four-limbed animal Seymouria
  †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
• 

  Life restoration of the Late Devonian-Permian Sphenacanthus
  †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
• 

  Life restorations of a male (foreground) and female (background) of the Late Devonian-Carboniferous Chimaera relative Stethacanthus
  †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
• 

  Restorative portrait of the Permian synapsid (mammal precursor) Tetraceratops
  †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
• 

  Mounted fossilized skeleton of the Permian synapsid (mammal precursor) Varanosaurus
  †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
• 

  Life restoration of the Permian amphibian Zatrachys
  †Zatrachys

Mesozoic

Selected Mesozoic taxa of Texas

• 

  Fossilized shell of the Early-Late Cretaceous ammonoid cephalopod Acanthoceras
  †Acanthoceras
  • †Acanthoceras adkinsi
  • †Acanthoceras amphibolum
  • †Acanthoceras barcusi
  • †Acanthoceras eulessanum
  • †Acanthoceras johnsonanum
  • †Acanthoceras tarrantense
  • †Acanthoceras wintoni
  • †Acanthoceras worthense
• Acesta
• Acirsa
• Acmaea
• †Acompsoceras
• 

  Life restoration of the Early Cretaceous theropod dinosaur Acrocanthosaurus
  †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
  • †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
• 

  Restoration of the Late Triassic lungfish Arganodus with an anachronistic human to scale
  †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
• 

  Fossilized shell of the Late Cretaceous ammonoid cephalopod Baculites
  †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
• 

  Life restoration of the Late Cretaceous plesiosaur Brachauchenius hunting a hesperornithiform bird
  †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
• 

  Fossil of the sauropod dinosaur footprint ichnogenus Brontopodus
  †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
• 

  Fossilized shell of the Cretaceous marine bivalve Caprina
  †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
• 

  Life restoration of the Late Triassic-Eocene lungfish Ceratodus
  †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
• 

  Life restoration of the Late Cretaceous pterosaur Cimoliopterus (left) stealing fish from another pterosaur
  †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
• 

  Fossilized shell of the Late Cretaceous ammonoid Collignoniceras
  †Collignoniceras
  • †Collignoniceras woollgari
• †Colognathus – type locality for genus
• †Coniasaurus
• †Continuoolithus
• †Conulus
• Corbicula
• Corbula
• †Coupatezia
• Crassostrea
• †Crenella
  • †Crenella elegantula
  • †Crenella serica
• 

  Fossil of the Early Cretaceous-Eocene shark Cretolamna
  †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
• 

  Mounted fossilized skeleton of the Late Cretaceous Alligator relative Deinosuchus
  †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
• 

  Restoration of the Late Triassic dinosaur relative Dromomeron
  †Dromomeron
  • †Dromomeron gregorii – type locality for species
• †Dryptosaurus
• †Dufrenoyia
  • †Dufrenoyia justinae
• †Durania
• †Echinocorys
• †Ecphora
• †Ectenosaurus
• †Edmontonia – or unidentified comparable form
• †Elea – tentative report
• 

  Restoration of the Early Cretaceous-Eocene bony fish Enchodus, or the "saber-toothed herring"
  †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
• 

  Fossilized shell of the Jurassic-Cretaceous foam oyster Exogyra
  †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
• 

  Illustration of a reconstructed skull of the Late Cretaceous mosasaur Globidens
  †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
• 

  A living Heterodontus, or bullhead shark
  Heterodontus
• †Heteromorpha
• Hexanchus
• Homarus
• †Hoplochelys
• †Hoploscaphites
• †Hybodus
• †Hydnophora – tentative report
• †Hypophylloceras
• †Ichthyodectes
• 

  Restoration of the Late Cretaceous toothed bird Ichthyornis
  †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
• 

  Life restoration at various ages of the Late Triassic amphibian Koskinonodon with an anachronistic human to scale
  †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
• 

  Life restoration of the Late Cretaceous plesiosaur Libonectes with an anachronistic scuba diver to scale
  †Libonectes
  • †Libonectes morgani – type locality for species
• Lima
• Limatula
• †Linearis
• Lingula
• †Linter
• †Linthia
• Linuparus
• †Lioestheria – tentative report
• Liquidambar – tentative report
• †Lissodus
• †Lithacoceras
• Lithophaga
• †Lonchidion
• 

  Life restoration of the Late Triassic aetosaur Longosuchus
  †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
• 

  Fossilized shell of the Late Cretaceous ammonoid cephalopod Mammites
  †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
• 

  Life restoration of the Late Triassic amphibian Metoposaurus with an anachronistic human to scale
  †Metoposaurus
  • †Metoposaurus bakeri – type locality for species
• †Micraster
• †Modiolus
  • †Modiolus sedesclaris
  • †Modiolus sedesclarus
• Monodonta – tentative report
• †Monopleura – tentative report
• †Morea
• †Mortoniceras
• 

  Life restoration of two of the Late Cretaceous Mosasaurus
  †Mosasaurus
  • †Mosasaurus missouriensis – tentative report
• †Mytilus
• †Naomichelys
• Natica
• Nebrius
• †Neithea
  • †Neithea bexarensis
  • †Neithea quinquecostata
• †Neocardioceras
  • †Neocardioceras juddii
• 

  Opalized guard of the belemnoid cephalopod Neohibolites
  †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
• 

  Fossilized tooth of the Late Cretaceous giant sawfish Onchopristis
  †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
• 

  Restorative portrait of the Early Jurassic synapsid (mammal precursor) Pachygenelus
  †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.
  • †Paluxysaurus jonesi – type locality for species. Now regarded as a junior synonym of Sauroposeidon proteles.
• †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
• 

  Fossilized shell of the Late Cretaceous ammonoid cephalopod Parapuzosia with a human indicating its size
  †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
• 

  Fossilized shell of the Early Triassic-Pliocene marine bivalve Pholadomya
  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
• 

  Life restoration of the Early-Late Cretaceous ichthyosaur Platypterygius
  †Platypterygius
• †Plesiosaurus
• Pleurotomaria
• †Plicatoscyllium – type locality for genus
• Plicatula
• †Plioplatecarpus – tentative report
• Polinices
• †Pollex
• †Polyptychodon
• †Poposaurus
  • †Poposaurus gracilis
• †Porituberoolithus
• 

  Restoration of the Late Triassic crocodile relative Postosuchus with an anachronistic human to scale
  †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
• 

  Life restoration of the Late Cretaceous bony fish Protosphyraena
  †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
• 

  Mounted fossilized skeleton of the Late Cretaceous pterosaur Quetzalcoatlus
  †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
• 

  Diagram illustrating the Early Cretaceous long-necked dinosaur Sauroposeidon with anachronistic humans to scale
  †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
• 

  Life restoration of the Late Triassic distant crocodilian relative Shuvosaurus
  †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
• 

  Life restoration of the Late Cretaceous ostrich dinosaur Struthiomimus
  †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
• 

  Life restoration of the Early Cretaceous Iguanodon relative Tenontosaurus
  †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
• 

  Mounted fossilized skeleton of the Late Cretaceous horned dinosaur Triceratops
  †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
• 

  Fossilized shell of the Late Cretaceous ammonoid cephalopod Turrilites
  †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
• 

  Fossilized skeleton of the Late Cretaceous tyrannosaur Tyrannosaurus
  †Tyrannosaurus
  • †Tyrannosaurus rex
• †Uktenadactylus
• Unio
• †Upogebia
• †Vancleavea
  • †Vancleavea campi
• †Vascellum
• †Vascoceras
• Venericardia
• †Vinella
• Viviparus – tentative report
• Volsella
• Vulsella
• 

  Fossilized partial skulls of the Early Cretaceous crocodilian Wannchampsus
  †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

Cenozoic

Selected Cenozoic taxa of Texas

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

  Life restoration of the Miocene camel Aepycamelus, or the long-necked camel. Heinrich Harder (1920).
  †Aepycamelus
• Agaronia
• Agkistrodon
• †Agriocharis
• †Agriochoerus
• †Agriotherium
• †Aguascalientia
• Akera
• †Alforjas
• Aliculastrum
• †Allaeochelys – or unidentified comparable form
• Alligator
  • †Alligator mississipiensis
  • †Alligator mississippiensis
  • †Alligator olseni
• 

  Fossilized skeleton of the Late Cretaceous-Oligocene Alligator relative Allognathosuchus
  †Allognathosuchus
• †Allomorone
• Alvania
• †Amblema
  • †Amblema plicata
• †Ambystoma
  • †Ambystoma tigrinum
• †Amebelodon
• †Ameiurus
• Amnicola
• †Amphicyon
• †Amphimachairodus
• Amphiuma
• †Ampullina
• Amusium
• Anadara
• 

  Life restoration of the Miocene-Pleistocene elephant relative Anancus
  †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
• 

  Restoration of an Arctodus, or short-faced bear, with a human to scale
  †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
• 

  Fossilized shell of the Paleocene-Miocene nautiloid cephalopod Aturia
  †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
  • 

    Mounted fossilized skeleton of the Pleistocene Bison latifrons, or long-horned bison
    †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
• 

  Restoration of two of the Miocene-Pliocene bone-crushing dog genus Borophagus preying on a camel. Jay Matternes (1964).
  †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
• 

  Mounted fossilized skeleton of the Pliocene-Holocene camel Camelops
  †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
• 

  Fossilized skeleton of the Pleistocene dwarf pronghorn Capromeryx
  †Capromeryx
• Capulus
• Carapus
• Carcharhinus
• †Carpocyon
• Carychium
  • †Carychium exiguum
• Caryophyllia
• Castor
  • †Castor canadensis
• Catagonus
• †Caveola
• Celtis
• Centropomus – tentative report
• 

  Life restoration of the Miocene-Pleistocene horned gopher Ceratogaulus. Robert Bruce Horsfall (1913).
  †Ceratogaulus
  • †Ceratogaulus anecdotus – or unidentified comparable form
• †Cerdocyon
• Cerithiella
• Cerithiopsis
• Cerithium – tentative report
• Chaetodipus
  • †Chaetodipus hispidus
• Chama
• Charina
• †Charophyte
• 

  Fossilized cranium of the Pliocene-Pleistocene hyena Chasmaporthetes
  †Chasmaporthetes
• Chironomus
• Chlamys
• †Chriacus
• †Cimolodon
• Cirsotrema
• Cissus
• Clavilithes
• Clavus – tentative report
• Closia
• Clypeaster
• Cochlespira
• Cochliolepis
• †Colodon
• Coluber
  • 

    A living Coluber constrictor, or eastern racer
    †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
• 

  Restoration of the Miocene palaeomerycid Cranioceras, a relative of modern deer, with anachronistic human to scale
  †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
• 

  Life restoration of the Pliocene-Holocene elephant relative Cuvieronius
  †Cuvieronius
• Cyclammina
• Cylichna
• †Cylindracanthus
• Cyllene – or unidentified comparable form
• †Cynarctoides
• †Cynarctus
• Cynomys
  • †Cynomys ludovicianus
• Cypraea
• Cypraedia
• Cythara
• †Daphoenictis
• 

  Life restoration of the Miocene bear-dog Daphoenodon
  †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
• 

  Illustration of the fossilized jaws and teeth of the Eocene brontothere mammal Duchesneodus
  †Duchesneodus
• †Echmatemys
• Elaphe
  • †Elaphe guttata
  • †Elaphe obsoleta
• Eleutherodactylus
  • †Eleutherodactylus augusti
• †Ellisella
• Emarginula – or unidentified comparable form
• Endochironomus
• †Eomellivora
• †Eosurcula
• Epicauta
• 

  Mounted fossilized skeleton of the Miocene bone-crushing dog Epicyon
  †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
  • 

    Fossilized skeleton of the Pliocene-Pleistocene horse Equus simplicidens, also known as the Hagerman horse or American zebra
    †Equus simplicidens
• Erethizon
  • †Erethizon dorsatum
• †Eucyon
  • †Eucyon davisi
• Eulima
• Eumeces
  • †Eumeces fasciatus
  • †Eumeces obsoletus
• †Euonymus
• Eupleura
• Euspira
• †Eutrephoceras
• †Exilia
• Fasciolaria – tentative report
• Felis
• †Ficopsis
• 

  A living Ficus, or fig tree
  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
• 

  Fossilized mandible of the Eocene horse Haplohippus
  †Haplohippus
• Harpa
• †Harpactocarcinus
• †Harpagolestes
• Hastula
• Haustator
• Hawaiia
  • †Hawaiia minuscula
• 

  Life restoration of the Pleistocene pronghorn Hayoceros
  †Hayoceros
• Helicina
  • †Helicina orbiculata
• Helicodiscus
  • †Helicodiscus parallelus
• Helisoma
  • †Helisoma anceps
  • †Helisoma trivolvis
• Heloderma
• †Hemiauchenia
  • †Hemiauchenia macrocephala
• †Herpetotherium
• †Hesperotestudo
• †Heteraletes
• Heterodon
  • 

    A living Heterodon nasicus, or Western hognose snake
    †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
• 

  Restoration of Pliocene-Pleistocene Homotherium, or scimitar cat
  †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
• 

  Fossilized skull of the Miocene bear Indarctos
  †Indarctos
• †Inga
• †Ischyrocyon
• †Ischyromys
• Isognomon
• †Jefitchia – type locality for genus
• Juglans
• †Kalobatippus
• Kinosternon
  • †Kinosternon flavescens
• Kuphus
• †Lacunaria
• †Lambdoceras
• †Lambertocyon
  • †Lambertocyon eximius
• 

  A living Lampropeltis getula, or eastern kingsnake
  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
• 

  Illustration of a fossilized skull of the Oligocene-Miocene dog Leptocyon
  †Leptocyon
• †Leptoreodon
• Lepus
  • †Lepus californicus
• Limacina
• Limaria
• †Limnenetes
• †Linthia
• Lithophaga
• Litiopa
• Littorina
• †Longirostromeryx
• 

  Shell of a Lovenia sea urchin
  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
  • 

    Life restoration of a herd of Mammuthus columbi, or Columbian mammoths. The extent of the fur depicted is hypothetical. Charles R. Knight (1909).
    †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
• 

  Restoration of the Pliocene-Holocene ground sloth Megatherium. Robert Bruce Horsfall (1913).
  †Megatherium
• †Megatylopus
• Melanella
• †Menetus
• †Menoceras
• †Menops
• Mephitis
  • †Mephitis mephitis
• Meretrix
• †Merychippus
  • †Merychippus sejunctus
• †Merychyus
• 

  Restoration of the Eocene-Oligocene oreodont mammal Merycoidodon. Heinrich Harder (1920).
  †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
• 

  Restoration of the Eocene-Miocene swamp rhinoceros Metamynodon. Charles R. Knight (1896).
  †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
• 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
• 

  Partial fossilized mandible of the Miocene-Pliocene horse Nannippus
  †Nannippus
• †Nanotragulus
• Narona
• Nassarius
• Nasua
• Natica
• Naticarius
• Natrix
  • †Natrix erythrogaster
• Nectandra
• †Neochoerus – type locality for genus
  • †Neochoerus pinckneyi
• Neofiber
• 

  Life restoration of a herd of Neohipparion. Robert Bruce Horsfall (1913).
  †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
• 

  Life restoration of the Pleistocene ground sloth Nothrotheriops
  †Nothrotheriops
• †Nothrotherium
• Notiosorex
  • †Notiosorex crawfordi
• †Notiotitanops
• Notophthalmus
• Nucula
• Nysius – tentative report
• Oculina
• Odocoileus
  • †Odocoileus virginianus
• 

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

  Life restoration of the Miocene pronghorn Osbornoceros
  †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
• 

  Fossilized skeleton of the Pliocene-Pleistocene ground sloth Paramylodon
  †Paramylodon
  • †Paramylodon harlani
• †Paramys
• †Paratoceras
• †Paratomarctus
• †Parectypodus
  • †Parectypodus sloani
• †Paronychomys – tentative report
• †Parvitragulus
• †Pediomeryx
• 

  Fossilized skull of the Eocene-Oligocene lizard Peltosaurus
  †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
• 

  Illustration of a fossilized skull in multiple views of the Oligocene-Miocene bone-crushing dog Phlaocyon
  †Phlaocyon
  • †Phlaocyon annectens
  • †Phlaocyon minor
• Pholadomya
• Pholas
• Phos
• Phrynosoma
  • †Phrynosoma cornutum
• Phyllodus
• Physa
• Pinna – tentative report
• Pisidium
  • †Pisidium nitidum
• Pitar
• Pituophis
  • †Pituophis melanoleucus
• Planorbis
• 

  Restoration of a herd of alarmed Miocene-Pleistocene peccaries of the genus Platygonus. Charles R. Knight (1922).
  †Platygonus
  • †Platygonus compressus
• †Pleiolama
• †Plesiocolopirus
• †Plesiogulo
• Pleurocera
• Pleurofusia
• Pleuromeris
• Pleuroploca
• †Pleurostoma
• Pleurotomella
• Plicatula
• 

  Fossilized skull of the Miocene horse Pliohippus
  †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
• 

  Restoration of the Miocene cat Pseudaelurus
  †Pseudaelurus – tentative report
• †Pseudhipparion
• Pseudochama
• Pseudoliva
• †Pseudoprotoceras
• †Psittacotherium
• Pteria
• Pteris
• Pterothrissus
• Pterynotus
• 

  Illustration of a fossilized skull of the Paleocene multituberculate mammal Ptilodus
  †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
  • 

    A living Rana catesbeiana (sometimes Lithobates catesbeianus), or American bullfrog
    †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
• 

  Restoration of the Miocene-Pliocene elephant relative Rhynchotherium
  †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
• 

  A living Scaphiopus, or North American spadefoot toad
  Scaphiopus
• †Scaphites
• Sceloporus
  • †Sceloporus olivaceus
  • †Sceloporus undulatus
• Sciurus
  • †Sciurus carolinensis
  • †Sciurus niger
• †Selaginella
• Selenophorus – or unidentified comparable form
• Semele
• Serpulorbis
• Sigatica
• Sigmodon
  • 

    A living Sigmodon, or cotton rat
    †Sigmodon hispidus
• Siliqua
• Simnia
• †Sinopa
• Sinum
• Siphonalia
• Siren
  • †Siren miotexana – type locality for species
• Skena
• Skenea
• 

  Life restoration of the Pleistocene-Holocene saber-tooth cat Smilodon
  †Smilodon
  • †Smilodon fatalis
• †Soergelia
  • †Soergelia mayfieldi
• Solariella
• Solemya
• Solen
• †Sophora
• Sorex
  • †Sorex cinereus
  • †Sorex palustris
  • †Sorex vagrans
• Spermophilus
  • †Spermophilus elegans – or unidentified comparable form
  • 

    A living Xerospermophilus spilosoma, or spotted ground squirrel
    †Spermophilus spilosoma
  • †Spermophilus tridecemlineatus
  • †Spermophilus variegatus
• Sphaerium
• Spilogale
  • †Spilogale putorius
• Spirorbis
• Spirotropis
• Spisula
• Stagnicola
  • †Stagnicola reflexa
• 

  Mounted fossilized skeleton of the Pliocene-Pleistocene elephant relative Stegomastodon
  †Stegomastodon
  • †Stegomastodon mirificus
• †Steneofiber
• †Stenomylus
• †Stenotrema
• Sternotherus
• Sthenictis
• †Stockoceros – or unidentified comparable form
• Storeria
  • †Storeria dekayi
• †Striatolamia
• Strobilops
• †Stygimys
• 

  Life restoration of the Eocene taeniodont mammal Stylinodon mirus
  †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
• 

  Restoration of the Miocene-Pliocene rhinoceros Teleoceras
  †Teleoceras
  • †Teleoceras major
• Tellina
• Tenagodus
• †Tephrocyon
• Terebellum
• Terebra
• Teredo
• Terminalia
• Terrapene
  • 

    A living Terrapene carolina, or common box turtle
    †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
• 

  Life restoration of the Paleocene pantodont mammal Titanoides
  †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
• 

  Life restoration of the Eocene mammal Uintatherium
  †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
• 

  Fossilized skull of the Pliocene-Pleistocene wolf Xenocyon
  †Xenocyon
• Xenophora
• Yoldia
• †Yumaceras
• Zonitoides
  • †Zonitoides arboreus