List of the Mesozoic life of Texas
This list of the Mesozoic life of Texas contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Texas and are between 252.17 and 66 million years of age.
A
Fossilized shell of the Early-Late Cretaceous ammonoid cephalopod Acanthoceras - Acesta
- Acila
- Acirsa
- †Acirsa flexicostata – tentative report
- Acmaea
- †Acompsoceras
Life restoration of the Early Cretaceous theropod dinosaur Acrocanthosaurus - †Acrosmilia
- Acteon
- †Acteon nitidus – tentative report
- †Acteon throckmortoni
- †Acteonella
- †Acteonella delgadoi
- †Acteonella pecosensis
- †Acteonella sublaevis – or unidentified comparable form
- †Actinacis
- †Actinacis valverdensis – type locality for species
- †Actinastrea
- †Actinostreon
- †Acutostrea
Life restoration of the Late Triassic synapsid (mammal precursor) Adelobasileus - †Adelobasileus cromptoni – type locality for species
- †Adinodon
- †Adinodon pattersoni – type locality for species
- †Adkinsella – type locality for genus
- †Adkinsella edwardsensis – type locality for species
- †Adkinsia
- †Adkinsia bosquensis – type locality for species
- †Adkinsia knikerae – type locality for species
- †Adocus
- †Aenona
- †Aetodactylus – type locality for genus
- †Aetodactylus halli – type locality for species
- †Agerostrea
- †Aguileria
- †Agujaceratops
- †Agujaceratops mariscalensis – type locality for species
- †Akera
Alamosaurus - †Albanerpeton
- †Albanerpeton arthridion – type locality for species
- †Albanerpeton gracilis
- †Albanerpeton nexuosus
- †Aliofusus
- †Aliomactra
- †Alkaidia – type locality for genus
- †Alkaidia sumralli – type locality for species
- †Allocrioceras
- Alnus
Restorative model of the Late Cretaceous mammal Alphadon - †Alphadon halleyi – or unidentified comparable form
- †Alphadon perexiguus – type locality for species
- †Altairia – type locality for genus
- †Amaurellina
- †Ambigostrea
- †Ambrosea
- Ammobaculites
Fossilized shell of the Jurassic-Miocene sea snail Ampullina - Amuletum
- Amusium
- †Amusium danei – tentative report
- †Anacolosidites
- †Anaklinoceras
- †Anatimya
- †Anchura
- †Ancilla
- †Angistorhinus
- †Angistorhinus alticephalus – type locality for species
- †Angistorhinus grandis
Reconstructive illustration of a fossilized skull of the Late Cretaceous duck-billed dinosaur Angulomastacator - †Angulomastacator daviesi – type locality for species
- †Anisoceras
- †Anisomyon
- †Anisomyon borealis – tentative report
- †Anisomyon haydeni
- †Anomalina
- †Anomalofusus
- Anomia
- †Anomoeodus
- †Anomotodon
- †Anomotodon toddi – type locality for species
- †Antillocaprina
- †Apachesaurus
- †Aphrodina
- Aplousina
- †Apsgnathus – type locality for genus
- †Apsgnathus triptodon – type locality for species
- †Aquilarhinus – type locality for genus[1]
- †Aquilarhinus palimentus – type locality for species[1]
- Arca
- Architectonica
- Arcopsis
- †Arctostrea
- †Areopsammia – type locality for genus
- †Areopsammia bakerae – type locality for species
Restoration of the Late Triassic lungfish Arganodus with an anachronistic human to scale - †Arganodus dorotheae – type locality for species
- Arrhoges
- †Asciocythere
- †Aspidoceras
- †Astacodes
- †Astandes
- Astarte
- †Astartemya
Electron micrograph and gross view of an Astrangia stony coral - †Astrangia cretacea
- †Astrangia lamarensis – type locality for species
- Astreopora – tentative report
- †Astreopora leightoni – type locality for species
- †Astrocoenia
- †Astrocoenia budaensis – type locality for species
- †Astrocoenia nidiformis
- †Astrocoenia scyphoidea – type locality for species
- †Astroconodon – type locality for genus
- †Astroconodon denisoni – type locality for species
- †Astrocratis – type locality for genus
- †Astrocratis acutispina – type locality for species
Life restoration of the Early Cretaceous long-necked dinosaur Astrodon - †Astrophocaudia – type locality for genus
- †Astrophocaudia slaughteri – type locality for species
- †Atreta
- †Aulastraeopora – type locality for genus
- †Aulastraeopora harrisi – type locality for species
- †Axonoceras
- †Axosmilia
- †Axosmilia craginiana – type locality for species
- †Axosmilia whitneyi – type locality for species
B
Fossilized shell of the Late Cretaceous ammonoid cephalopod Baculites - †Baculites aquilaensis - or unidentified loosely related form
- †Baculites claviformis
- †Baculites haresi – or unidentified comparable form
- †Baculites ovatus
- †Baculites scotti
- †Baculites taylorensis
- †Baculites tippahensis
- †Baculites undatus
- †Baena – report made of unidentified related form or using admittedly obsolete nomenclature
- †Banis
- Barbatia – tentative report
- †Barroisiceras
Mounted fossilized skeleton of the Cretaceous turtle Basilemys - †Bathycyathus – tentative report
- †Bathycyathus lloydi – type locality for species
- †Bathytormus
- †Belemnitella
- †Bellifusus
- †Belliscala
- †Belodon
- †Belodon superciliosus – type locality for species
Fossilized skeleton of the Late Cretaceous bony fish Belonostomus - †Beretra
Life restoration of the Early Cretaceous crocodilian relative Bernissartia - †Betelgeusia – type locality for genus
- †Betelgeusia reidi – type locality for species
- †Borissiakoceras
- †Bostrychoceras
- Botula
Life restoration of the Late Cretaceous plesiosaur Brachauchenius hunting a hesperornithiform bird - Brachidontes
- Brachiodontes
- †Brachychampsa
- †Brachycythere – tentative report
- †Brachyrhizodus – type locality for genus
- †Brachyrhizodus wichitaensis – type locality for species
- †Brachysuchus – type locality for genus
- †Brachysuchus megalodon – type locality for species
Life restoration of the Late Cretaceous horned dinosaur Bravoceratops - †Bravoceratops polyphemus – type locality for species
- †Breviarca
- †Brontopodus – type locality for genus
- †Brontopodus birdi – type locality for species
- †Buccinopsis
- †Budaia – type locality for genus
- †Budaia travisensis – type locality for species
- †Budaiceras
- †Burckhardtites
- Busycon – tentative report
C
- Cadulus
- Caestocorbula
- Callianassa
- †Calliomphalus
- Callistina
- †Callodus – type locality for genus
- †Callodus coronatus – type locality for species
- Callucina
- †Calyptosuchus – type locality for genus
- †Calyptosuchus wellesi – type locality for species
Three modern shells of Calyptraea, or Chinese hat snails - †Camptonectes
- Cancellaria
- †Cancellaria matroni – tentative report
- †Cantabrigites
- †Cantabrigites spinosum
- †Cantabrigites subsimplex – or unidentified related form
- Cantharus – tentative report
- †Cantioscyllium
- †Cantioscyllium meyeri – type locality for species
- †Capellia – type locality for genus
- †Capellia mauricei – type locality for species
Fossilized shell of the Cretaceous marine bivalve Caprina - †Caprinuloidea
- Capulus
- †Capulus cuthandensis
- †Capulus erectus
- †Capulus microstriatus – tentative report
- †Capulus spangleri
A living Carcharias sand tiger shark - †Carcharias heathi – type locality for species
- †Carcharias holmdelensis
- †Carcharias samhammeri – or unidentified comparable form
- †Cardiaster
- Cardium
- †Caririchnium
- †Caririchnium protohadrosaurichnos – type locality for species
- Carota
- †Carycorbula
- Caryocorbula
A living Caryophyllia solitary coral - †Caryophyllia comanchei – type locality for species
- †Caryophyllia dentonensis – type locality for species
- †Caryophyllia konincki – type locality for species
- †Caseosaurus – type locality for genus
- †Caseosaurus crosbyensis – type locality for species
- †Casierius
- †Catactegenys – type locality for genus
- †Catactegenys solaster – type locality for species
- †Catastomocystis
Fossilized skeleton of the Permian-Early Cretaceous bony fish Caturus - †Caveola
- †Caveola acuta – tentative report
- †Caveola bellsana
- †Caveola producta
- †Cedarosaurus
- †Cenomanocarcinus
Life restoration of the Late Triassic-Eocene lungfish Ceratodus - †Ceratodus americanus – or unidentified comparable form
- Ceratotrochus – tentative report
- †Ceriopora
- Cerithiella
- †Cerithiella nodoliratum – or unidentified related form
- †Cerithiella semirugatum
- Cerithium
- †Chamops
- †Champsosaurus
- †Chartecytis
- †Cheloniceras
Restoration of the Late Triassic theropod dinosaur Chindesaurus - †Chinlea
- †Chirostenotes
- †Chondrodonta
- †Chondrodonta glabra
- †Chondrodonta munsoni
- †Chondrodonta youngi – type locality for species
- †Chupacabrachelys – type locality for genus
- †Chupacabrachelys complexus – type locality for species
- Cidaris
- †Cimexomys
- †Cimoliasaurus
Life restoration of the Late Cretaceous pterosaur Cimoliopterus (left) stealing fish from another pterosaur - †Cimoliopterus dunni – type locality for species
- †Cimolodon
- †Cimolodon electus – or unidentified comparable form
- †Cimolomys
- †Cinulia
- †Cinulia tarrantensis – or unidentified related form
- †Cionichthys
- †Cionichthys greeni – type locality for species
- †Citharina
- †Cladoceramus
- †Cladophyllia
- †Clavipholas
- †Clevosaurus – or unidentified comparable form
Life restoration of the Late Cretaceous mosasaurid Clidastes - Cliona
- †Clisocolus
- †Coahomasuchus – type locality for genus
- †Coahomasuchus kahleorum – type locality for species
- †Coahuilites – tentative report
- †Coalcomana
- †Codiopsis
- †Codiopsis stephensoni – type locality for species
- †Coelodus
- †Coelodus decaturensis – type locality for species
- †Coelodus fabadens – type locality for species
Life restoration of the Late Triassic-Early Jurassic theropod dinosaur Coelophysis with an anachronistic human to scale - †Coelosmilia
- †Coilopoceras
- †Collignoniceras
- †Colognathus – type locality for genus
- †Colognathus obscurus – type locality for species
- †Colombiceras
- †Columbiceras
- †Comptoniaster
- †Confusiscala – tentative report
- †Coniasaurus
- †Connectastrea – tentative report
- †Connectastrea infundibuliformis – type locality for species
- Conopeum
- †Continuoolithus
- †Conulus
- †Conulus stephensoni – type locality for species
- †Convolosaurus – type locality for genus[2]
- †Convolosaurus marri – type locality for species[2]
A living Corbicula basket clam - Corbula
- †Corbula amniculana
- †Corbula dentonensis
- †Corbula inflata
- †Corbula linteroidea
- †Corbula ponsana
- †Corbula pulvinata
- †Corbula rockensis
- †Corbula senecta
- †Corbula starana
- †Corbula subradiata
- †Corbula subradiata texana
- †Corbula torta – or unidentified related form
- †Corbula williardi – tentative report
- †Corbula woodi
- †Coskinolinoides
- †Costellacesta
- †Coupatezia
- †Coupatezia turneri – type locality for species
- †Craginia
- Crassatella
Fossilized shell of the Cretaceous-modern oyster Crassostrea - †Crateraster
- †Crenella
- †Creonella
- †Cretacoranina
Fossil of the Early Cretaceous-Eocene shark Cretolamna - †Cretorectolobus
- †Cretorectolobus olsoni – or unidentified comparable form
- †Crosbysaurus – type locality for genus
- †Crosbysaurus harrisae – type locality for species
- Ctena
Shell of a Cucullaea, or false ark shell - †Cuna
- †Curtocaprina – type locality for genus
- †Curtocaprina clabaughikinsorum – type locality for species
- Cuspidaria
- †Cyathomorpha – tentative report
- †Cyathomorpha damoni – type locality for species
- †Cyathophora
- †Cyathophora haysensis – type locality for species
- †Cyathophora olssoni – type locality for species
- †Cyclorisma
- †Cyclothyris
- Cylichna
Fossilized shell of the Late Jurassic-Oligocene nautiloid cephalopod Cymatoceras - †Cymatoceras hilli – or unidentified comparable form
- †Cymatoceras texanum
- †Cymbophora
- †Cymella
- †Cypridae
- †Cypridae wyomingensis – or unidentified related form
- †Cyprimeria
- Cythere
- †Cythereis
- Cytherella
- Cytherelloidea
- Cytheropteron
- Cyzicus – tentative report
D
Life restoration of the Late Cretaceous primitive mosasaur Dallasaurus - †Dallasaurus turneri – type locality for species
- †Darwinula
- Dasmosmilia
- †Dasmosmilia kochii – type locality for species
- Dasyatis
- †Dasyatis commercensis – type locality for species
- †Dathmila
- †Dawsonius
Mounted fossilized skeleton of the Late Cretaceous Alligator relative Deinosuchus - †Deinosuchus riograndensis
- †Deinosuchus rugosus – type locality for species
- †Deltaichthys
- †Dendrosmilia – tentative report
- †Denebia – type locality for genus
- Dentalina
- Dentalium
- †Dentonia
Restoration of the Late Triassic aetosaur Desmatosuchus with an anachronistic human to scale - †Desmatosuchus haplocerus
- †Desmatosuchus smalli – type locality for species
- †Desmatosuchus spurensis – type locality for species
- †Desmoceras
- †Deussenia
- †Dhondtichlamys
- †Dichastopollenites
- †Dictyoconus
- †Dimorpharaea
- †Dimorpharaea manchacaensis – type locality for species
- †Dimorphastrea
- †Dimorphastrea stantoni – type locality for species
- †Dinogymnium
- Diodora – tentative report
Fossilized skeleton of the Late Triassic tuatara relative Diphydontosaurus - †Diploastrea
- †Diploastrea harrisi – type locality for species
- †Diploastrea hilli – type locality for species
- †Diploastrea vaughani – type locality for species
- †Diplolonchidion – type locality for genus
- †Diplolonchidion murryi – type locality for species
- †Diplomoceras
- †Discofascigera
- Discorbis
- †Discoscaphites
- †Distefanella – or unidentified comparable form
- !-- Doswellia: Automatic taxobox --> †Doswellia
- †Douvilleiceras
- †Douvilleiceras grandense
- †Douvilleiceras mammillatum
- †Douvilleiceras offarcinatum – or unidentified comparable form
- †Douvilleiceras orbignyi – or unidentified comparable form
- †Douvilleiceras quitmanense
- †Douvilleiceras rex
- †Douvilleiceras spathi
- †Douvillelia – tentative report
Shell of a Dreissena freshwater mussel - †Drepanocheilus
- †Drepanochilus
- †Drilluta
- †Drilluta brevispira
- †Drilluta crassicostata
- †Drilluta crassicostata longa
- †Drilluta distans
- †Drilluta major – or unidentified comparable form
- †Drilluta paucicostata
Restoration of the Late Triassic dinosaur relative Dromomeron - †Dromomeron gregorii – type locality for species
- †Dryptosaurus
- †Dufrenoyia
- †Durania
E
- †Echinocorys
- †Ecphora
Fossilized partial skeleton of the Late Cretaceous mosasaur Ectenosaurus - †Edmontonia – or unidentified comparable form
- †Elea – tentative report
- †Elephantaria
- †Elephantaria simondsi – type locality for species
- †Ellipsoscapha
Restoration of the Early Cretaceous-Eocene bony fish Enchodus, or the "saber-toothed herring" - †Endoplocytia
- †Endoptygma
- †Endostoma
- †Endostoma mexicana – or unidentified comparable form
- †Engonoceras
- †Engonoceras complicatum
- †Engonoceras elegans
- †Engonoceras gibbosum
- †Engonoceras hilli
- †Engonoceras retardum
- †Engonoceras serpentinum
- †Engonoceras stolleyi
- †Engonoceras subjectum – or unidentified related form
- †Enoploclytia
- †Entolium
- †Eoacteon
- †Eodouvilleiceras
- †Eomunidopsis
- Eonavicula
- †Eoradiolites
- †Eosiderastrea
- †Eosiderastrea cuyleri – type locality for species
- †Eoursivivas
- †Epiaster
- †Epiphaxum
- †Epiphaxum labyrinthicum – type locality for species
- †Episcoposaurus – type locality for genus
- †Episcoposaurus haplocerus – type locality for species
- †Epistomina
- †Epistreptophyllum
- †Epistreptophyllum boesei – type locality for species
- †Epistreptophyllum budaensis – type locality for species
- †Epistreptophyllum shumardi – type locality for species
- †Epitonium
- †Etea
- †Ethmocardium
- †Eubaculites
Fossilized shell of the Late Cretaceous ammonoid cephalopod Eubostrychoceras - †Eucalycoceras
- †Eucalycoceras templetonense – type locality for species
- †Eufistulana
- †Eufistulina
- †Eugyra
- †Eugyra cuyleri – type locality for species
- †Euhoplites – tentative report
- †Eulima
- †Euomphaloceras
- †Eupachydiscus
Shell of a Euspira moon sea snail - Euthriofusus – or unidentified related form
- †Eutrephoceras
- †Ewingia – type locality for genus
- †Ewingia problematica – type locality for species
Fossilized shell of the Jurassic-Cretaceous foam oyster Exogyra
F
Fossilized shell of the Late Cretaceous ammonoid cephalopod Fagesia - †Faraudiella
- †Faujasia
- †Faujasia chelonium – type locality for species
- †Favia
- †Feldmannia
- †Ficheuria
- †Ficheuria pernoni – or unidentified related form
- †Fictoacteon
- Filisparsa
- †Flaventia
- †Flemingostrea
- †Flexomornis – type locality for genus
- †Flexomornis howei – type locality for species
- †Flickia
- †Flickia simplex – type locality for species
- †Fomalhautia – type locality for genus
- †Fomalhautia hortensae – type locality for species
- †Forbesiceras
- †Forresteria
- †Forresteria castellense – type locality for species
- †Forresteria forresteri – type locality for species
- †Forresteria sevierense – type locality for species
- †Frenelopsis
- †Fulgerca
- †Fulgerca attenuata – or unidentified related form
- †Fulgerca venusta
- †Fulpia
- †Fungella
- †Fuscinapedis – type locality for genus
- †Fuscinapedis woodbinensis – type locality for species
- †Fusimilis
A living Fusinus sea snail - †Fusinus cornelianus
- †Fusinus macnairyensis – or unidentified related form
G
A living Galeorhinus galeus school shark - †Galeorhinus girardoti – or unidentified related form
- †Gallolestes
- †Gallolestes agujaensis – type locality for species
- †Garramites
- Gastrochaena
- Gaudryina
- Gegania
- †Geltena
- †Gerdalia
Fossilized shell of the Carboniferous-Eocene bivalve Gervillia - †Gervillia bryani
- †Gervillia wellsi – tentative report
- †Gervilliopsis
- Ginglymostoma
- †Glenrosa
- †Globator
- †Globator vaughani – type locality for species
Illustration of a reconstructed skull of the Late Cretaceous mosasaur Globidens - Globigerina
- Glossus
- Glycymeris
Fossilized skull and shell of the Late Jurassic-Early Cretaceous turtle Glyptops - †Glyptoxoceras
- †Gobiates
- †Goniochasma
- †Goniocylichna
- †Goniophorus
- †Graciliala
- †Graciliala calcaris
- †Graciliala cooki
- †Graciliala johnsoni – tentative report
- †Grammatodon
- †Granocardium
- †Graphidula
- †Graphidula gabrielensis – tentative report
- †Graphidula hoggi
- †Graphidula lynnensis
- †Graphidula multicostata
- †Graphidula terebriformis
- †Graptocarcinus
- †Graysonia
- †Graysonites
- †Gryphaea
- †Gryphaea aucella – or unidentified related form
- †Gryphaea gibberosa
- †Gryphaea marcoui
- †Gryphaea pitcheri
- †Gryphaea washitaensis
- †Gryphaeostrea
Restorative portrait of the Late Cretaceous duck-billed dinosaur Gryposaurus. - †Guembelina
- †Gumbelina
- †Gymnentome
- †Gypsichnites
- Gyrodes
- †Gyronchus
- †Gyrostrea
H
Shell of Haminoea bubble shell sea snail - †Hamites
- †Hamrabatis
- †Hamrabatis weltoni – type locality for species
- †Hamulus
- †Haplostiche
- †Haplovoluta
- †Harduinia
- †Helicoceras
- †Helopanoplia
- Hemiaster
- †Hemiaster benhurensis
- †Hemiaster bexari
- †Hemiaster jacksoni
- †Hemiaster sabinal – type locality for species
- †Hemiaster texanus
- †Hemiaster wetherbyi
- †Hemicalypterus – tentative report
- Hemicerithium
- †Hercorhynchus
- †Hercorhyncus
- †Heterocoenia – tentative report
- †Heterocoenia hilli – type locality for species
- †Heterocoenia washitaensis – type locality for species
- Heterodontus
- †Heterodontus granti – type locality for species
- † Heteromorpha
Illustration of a living Hexanchus, or sixgill shark - †Hillites
- †Hindeastraea
- †Holaster
- †Holoclemensia – type locality for genus
- †Holoclemensia texana – type locality for species
Fossil of the Late Cretaceous lobster Hoploparia bearpawensis - †Homoeosolen
- †Homomya
- †Homomya thrusheri – tentative report
- †Hoplochelys
- †Hoploscaphites
- †Huetamia
Life restoration of two of the Permian-Late Cretaceous cartilaginous fish Hybodus - †Hybodus brevicostatus – or unidentified comparable form
- †Hybodus butleri – type locality for species
- †Hydnophora – tentative report
- †Hydnophora styriaca – type locality for species
- †Hydrotribulus
- †Hylaeobatis – or unidentified comparable form
- †Hypacanthoplites
- †Hypolophus
- †Hypolophus mcnultyi – type locality for species
- †Hypophylloceras
- †Hypophylloceras tanit – or unidentified comparable form
- †Hypoturrilites
I
- †Ichthyodectes
Restoration of the Late Cretaceous toothed bird Ichthyornis - †Idoceras
- †Iguanodon – or unidentified comparable form
Fossilized shell of the Early Jurassic-Late Cretaceous marine bivalve Inoceramus with a human indicating its size - †Inoceramus anomalus – or unidentified comparable form
- †Inoceramus arnoldi
- †Inoceramus arvanus
- †Inoceramus balticus
- †Inoceramus biconstrictus
- †Inoceramus cordiformis – or unidentified comparable form
- †Inoceramus cummingsi
- †Inoceramus deformis
- †Inoceramus dimidius
- †Inoceramus eulessanus
- †Inoceramus fragilis
- †Inoceramus prefragilis
- †Inoceramus vanuxemi – tentative report
- †Irenesauripus
- †Isastrea
- †Isastrea whitneyi – type locality for species
- †Ischyrhiza
- †Ischyrhiza avonicola
- †Ischyrhiza mira
- †Ischyrhiza monasterica – type locality for species
- †Isomicraster
- †Isomicraster danei
- †Isomicraster rossi – type locality for species
J
Fossilized shell of the Late Cretaceous ammonoid cephalopod Jeletzkytes - Juliacorbula
K
- †Kamerunoceras
- †Kamerunoceras calvertense
- †Kamerunoceras eschii – or unidentified comparable form
- †Kasanskyella
- †Kasanskyella cuchillensis – tentative report
- †Kasanskyella fosteri
- †Kasanskyella spathi
- †Kasanskyella whitneyi – tentative report
- †Kazanskyella
- †Kermackia – type locality for genus
- †Kermackia texana – type locality for species
- †Kimbleia
- †Koskinonodon – type locality for genus
- †Koskinonodon perfectus – type locality for species
Life restoration of the Late Cretaceous duck-billed dinosaur Kritosaurus
L
- †Laevigyra
- †Lamellaerhynchia
- †Lamellaerhynchia indi – type locality for species
- †Lamellaerhynchia viae – type locality for species
A modern Lamna mackerel shark - †Lamna sulcata – or unidentified related form
- †Lanieria
- †Lanieria uvaldana – type locality for species
- †Lasalichthys
- Laternula
- †Latiala
- †Latiastrea
Shells in multiple views of Latiaxis coral sea snails - †Latiscopus – type locality for genus
- †Latiscopus disjunctus – type locality for species
- †Laxispira
- †Legumen
- Lenticulina
- †Lepidotes
- Lepisosteus
- †Leptarbacia
- Leptomaria
†Leptorhynchos – type locality for genus
- †Leptorhynchos gaddisi – type locality for species
- †Leptosolen
- †Leptostyrax
Fossilized skull of the Late Triassic phytosaur Leptosuchus - †Leptosuchus crosbiensis – type locality for species
- †Leptosuchus imperfecta – type locality for species
- †Leptosuchus studeri – type locality for species
- †Levicerithium
- †Lewesiceras
- †Lewyites
- †Leyvachelys
- †Libognathus – type locality for genus
- †Libognathus sheddi – type locality for species
Life restoration of the Late Cretaceous plesiosaur Libonectes with an anachronistic scuba diver to scale - †Libonectes morgani – type locality for species
- Lima
- Limatula
- Limea
- Limopsis
- †Linearia
- †Linearis
- Lingula
- †Linter
- †Linthia
A modern Linuparus spiny lobster - †Lioestheria – tentative report
- †Liopeplum
- †Liopistha
- †Liothyris
- †Liothyris carolinensis – or unidentified comparable form
- †Liothyris navarroana
- Liquidambar – tentative report
- †Lirosoma
- †Lispodesthes
- †Lissodus
- †Lissodus babulski – or unidentified related form
Lithacoceras - Lithophaga
- †Lomirosa
- †Lonchidion
- †Lonchidion anitae – type locality for species
- †Lonchidion humblei – type locality for species
- †Lonchidion selachos
- †Longoconcha
Mounted fossilized skeleton of the Late Triassic aetosaur Longosuchus - †Longosuchus meadei – type locality for species
- †Longosuchus meadi
- Lopha
- †Loriolia
- †Lowenstamia
- †Lowenstamia subplanus – or unidentified comparable form
- †Loxostomoides
- †Lucasuchus – type locality for genus
- †Lucasuchus hunti – type locality for species
- Lucina
- †Luisogalathea
- †Lupira
- †Lutema
- †Lycettia
- †Lyriochlamys – tentative report
M
- †Macraster
- †Macrepistius
- †Macrocerithium
- †Macromesodon
- †Magadiceramus
- †Magadiceramus complicatus
- †Magadiceramus crenelatus
- †Magadiceramus crenistriatus – or unidentified comparable form
- †Magadiceramus subquadratus
- †Magnoavipes – type locality for genus
- †Magnoavipes lowei – type locality for species
Life restoration of the Late Triassic reptile Malerisaurus - Malletia
- †Mammites
- †Mammites powelli – type locality for species
- †Mantelliceras
- †Mantelliceras cantianum
- †Mantelliceras martimpreyi – or unidentified comparable form
- †Mantelliceras saxbii
- †Margaritella
Fossilized shell of the Early-Late Cretaceous ammonoid cephalopod Mariella - †Mariella bosquensis
- †Mariella brazoensis
- †Mariella camachoensis
- †Mariella cenomanensis – or unidentified comparable form
- †Mariella davisense
- †Mariella rhacioformis
- †Mariella wysogorskii
Mounted skeleton of the Late Cretaceous plesiosaur Martinectes - †Mataxa
- †Mathilda
- †Meandraraea
- †Meandraraea plummeri – type locality for species
- †Meandraraea tulae – or unidentified comparable form
- †Medionapus
- Megalomphalus – or unidentified comparable form
- †Megalosauropus – tentative report
- †Megalosauropus titanopelobatidus – type locality for species
- Melanatria
- †Melicertites
- Membranipora
- Membraniporidra
- †Menabites
Fossilized skull of the Late Cretaceous multituberculate mammal Meniscoessus - †Menuites
- Mesalia
- †Mesodma
- †Mesomorpha
- †Mesomorpha excavata
- †Mesomorpha vaughani – type locality for species
- †Metengonoceras
- †Metoicoceras
Life restoration of the Late Triassic amphibian Metoposaurus with an anachronistic human to scale - †Metoposaurus bakeri – type locality for species
- †Metoposaurus fraasi
- †Metoposaurus jonesi – type locality for species
- †Metoposaurus perfecta
- †Mexicaprina
- †Micrabacia
- †Micrabacia marylandica
- †Micrabacia radiata – type locality for species
- †Micraster
- †Micraster americanus
- †Micraster uddeni – type locality for species
- †Microsolena
- †Microsolena texana – type locality for species
- †Microsulcatoceras
- †Microsulcatoceras texanum – type locality for species
- †Miocardiopsis
Fossilized shell of the Devonian-modern marine bivalve Modiolus, or horsemussel - Monodonta – tentative report
- †Monopleura – tentative report
- †Monroea
- Montastraea
- †Montastraea comalensis
- †Montastraea edwardsensis – type locality for species
- †Montastraea pecosensis – type locality for species
- †Montastraea roemeriana – type locality for species
- †Montastraea texana
- †Montastraea travisensis
- †Montastraea whitneyi
- †Morea
- †Moremanoceras
- †Moremanoceras elgini
- †Moremanoceras flexuosum – type locality for species
- †Morphastrea
- †Morphastrea barcenai – or unidentified comparable form
- †Mortoniceras
Life restoration of two of the Late Cretaceous Mosasaurus - †Mosasaurus maximus
- †Mosasaurus missouriensis – tentative report
- †Muensterella[3]
- †Muensterella jillae – type locality for species[3]
- †Myobarbum
- †Myriophyllia – tentative report
- †Myriophyllia dumblei – type locality for species
- Myrtea
- †Mytiloides
- †Mytilus
N
- †Naomichelys
- †Napulus
Multiple views of a fossilized shell belonging to a Natica moon snail - Nebrius
- †Neithea
- †Nelltia
- †Nemocardium
- †Nemodon
- †Neobrites
- †Neocardioceras
- †Neodeshayesites
- †Neogauthiericeras
Opalized guard of the belemnoid cephalopod Neohibolites - †Neophlycticeras
- †Neophlycticeras archerae – type locality for species
- †Neophlycticeras blancheti – or unidentified comparable form
- †Neophlycticeras fascicostatum – type locality for species
- †Neophlycticeras roemeri
- †Neophlycticeras texanum
- †Neoptychites
- †Nerinea – tentative report
- Nerita
Living Neritina or nerite snails - Nodosaria
- †Nonactaeonina
- †Nonaphalagodus – type locality for genus
- †Nonaphalagodus trinitiensis – type locality for species
Restoration of several species of the Late Cretaceous ammonoid cephalopod Nostoceras - †Notodonax
- †Notopoides – tentative report
- †Notopoides pflugervillensis – type locality for species
- †Nucleopygus
Interior of a fossilized shell of the Early Ordovician-modern marine bivalve Nucula - Nuculana
- †Nudivagus – tentative report
- †Nymphalucina
- †Nyssa
O
- †Odaxosaurus
A living Odontaspis sand shark - †Ogilviastraea – tentative report
- †Ogilviastraea richardsi – type locality for species
- †Oklatheridium
- †Oligoptycha
- †Oligoptycha americana – tentative report
- †Onchopristis
Fossilized vertebrae of the Cretaceous sawfish Onchosaurus - †Opertochasma
- †Ophiomorpha
- †Ophiopsis – tentative report
- Ophiura
- †Ophiura graysonensis
- †Ophiura texana
- †Ophiura travisana – type locality for species
- †Opis
- †Opis elevata – tentative report
Life restoration of the Late Cretaceous ostrich dinosaur Ornithomimus - †Ornopsis
- †Ostlingoceras
Shell of an Ostrea, or oyster - †Ostrea alternans
- †Ostrea bella
- †Ostrea beloiti
- †Ostrea carica
- †Ostrea carinata – or unidentified related form
- †Ostrea crenulimargo
- †Ostrea leveretti
- †Ostrea lugubris
- †Ostrea owenana
- †Ostrea panda
- †Ostrea rubradiata
- †Ostrea soleniscus
- †Ostrea subovata
- †Ostrea subradiata
- †Otischalkia – type locality for genus
- †Otischalkia elderae – type locality for species
- †Ovalastrea – type locality for genus
- †Ovalastrea fredericksburgensis – type locality for species
- †Ovalastrea pecosensis – type locality for species
- †Oxyrhina
- †Oxytropidoceras
- †Oxytropidoceras acuticarinatum
- †Oxytropidoceras acutocarinatum
- †Oxytropidoceras bravoensis
- †Oxytropidoceras carbonarium
- †Oxytropidoceras diazi
- †Oxytropidoceras moorei
- †Oxytropidoceras multifidum
- †Oxytropidoceras pandalense – or unidentified comparable form
- †Oxytropidoceras powelli
- †Oxytropidoceras salasi
- †Oxytropidoceras stenzeli
- †Oxytropidoceras supani
- †Oxytropidoceras texanum
- †Oxytropidoceras uddeni
P
- †Pachycheilosuchus – type locality for genus
- †Pachycheilosuchus trinquei – type locality for species
- †Pachydesmoceras
- †Pachydiscus
Restorative portrait of the Early Jurassic synapsid (mammal precursor) Pachygenelus - †Pachygenelus milleri – type locality for species
- †Pachymelania
- †Pachymya
- Pagurus
- †Paladmete
Fossilized skeleton of the Early Cretaceous-Eocene bony fish Palaeobalistum - †Palaeobalistum geiseri – type locality for species
- †Palaeobalistum rectidens – type locality for species
- †Palaeoctonus
- †Palaeoctonus dumblianus – type locality for species
- †Palaeoctonus orthodon – type locality for species
- †Palaeocypraea
- †Palaeogaleus
- †Palaeogaleus navarroensis – type locality for species
- †Paleollanosaurus – type locality for genus
- †Paleollanosaurus fraseri – type locality for species
- †Paleomolops
- †Paleomolops langstoni – type locality for species
- †Paleopsephaea
Life restoration of the Late Triassic phytosaur Paleorhinus - †Paleorhinus sawini – type locality for species
- †Paluxysuchus – type locality for genus
- †Paluxysuchus newmani – type locality for species
- †Panis
- Panopea
- †Panopea anacachoensis – type locality for species
- †Panopea subplicata
- †Pantojaloria
- †Pappotherium – type locality for genus
- †Pappotherium pattersoni – type locality for species
- †Paracimexomys
- Paracyprideis
- Paracypris
- †Parafusus – tentative report
- †Parahoplites
- †Paraisurus
- †Paramicrodon – type locality for genus
- †Paramicrodon estesi – type locality for species
- †Parandiceras
- †Parandiceras indicum – or unidentified comparable form
- †Paranecrocarcinus
- †Paranecrocarinus
- †Paranomia
Fossilized shell of the Late Cretaceous ammonoid cephalopod Parapuzosia with a human indicating its size - †Parapuzosia americana – type locality for species
- †Parapuzosia bosei – type locality for species
- †Parapuzosia sealei – type locality for species
- †Parasaniwa – or unidentified comparable form
- Parasmilia
- †Parasmilia austinensis
- †Parasmilia bullardi – type locality for species
- †Parasmilia graysonensis – type locality for species
- †Parasuchus
Mounted fossilized skeleton of the Late Triassic aetosaur Paratypothorax - †Paraxiopsis
- †Parengonoceras
- †Parmicorbula
- †Paronychodon
- †Paronychodon lacustris – or unidentified comparable form
- Parvamussium
- †Parvivoluta – tentative report
- Patellina
Fossilized skull in multiple views of the Early Cretaceous armored dinosaur Pawpawsaurus - †Pawpawsaurus campbelli – type locality for species
- †Pecten
- †Pedinopsis
- †Peilinia
- †Pekinosaurus – or unidentified related form
- †Peneteius
- Periploma
- †Periplomya
- Perna – report made of unidentified related form or using admittedly obsolete nomenclature
- †Perrisonota
- Petrophyllia
- †Phacellocoenia – tentative report
- †Phacellocoenia tolmachoffana – type locality for species
- Phacoides
- †Pharodina
- †Phelopteria
- Pholadidea
Fossilized shell of the Early Triassic-Pliocene marine bivalve Pholadomya - Pholas
- †Phyllobrissus
Phymosoma - †Phytosaurus
- †Piestochilus
- †Pinella
- †Pinna
- †Pirsila
- Pitar
Fossilized shell of the Late Cretaceous ammonoid cephalopod Placenticeras - Placopsilina
- †Placotrochus
- Plagioecia
- †Planocephalosaurus
- †Planocephalosaurus lucasi – type locality for species
- Planulina
Restoration of the Late Cretaceous mosasaur Platecarpus - †Platecarpus planifrons
- †Platecarpus somenensis – or unidentified comparable form
- †Platecarpus tympaniticus
- †Platiknemiceras
- †Platyceramus
- †Platyceramus cycloides
- †Platyceramus mantelli - or unidentified loosely related form
Life restoration of the Early-Late Cretaceous ichthyosaur Platypterygius - †Plesiacanthoceras
- †Plesiosaurus
- †Pleuriocardia
- †Pleurocora
- †Pleuromya
- †Pleurosmilia
- †Pleurosmilia quaylei – type locality for species
- †Pleurosmilia saxifisi – type locality for species
Fossilized shell of a Pleurotomaria slit snail - †Plicatolamna – or unidentified comparable form
- †Plicatoscyllium – type locality for genus
- †Plicatoscyllium antiquum – type locality for species
- †Plicatoscyllium derameei – type locality for species
- Plicatula
- †Plioaxius
Life restoration of the Late Cretaceous mosasaur Plioplatecarpus - †Poecilocrinus
- Polinices
- †Pollex
- †Polyacrodus
- †Polyacrodus parvidens – or unidentified related form
- †Polyptychodon
- †Polyptychodon hudsoni – type locality for species
- †Polytremacis
- †Polytremacis hancockensis – type locality for species
- †Polytremacis urgonensis
- †Pontocyprella
- †Poposaurus
- †Porituberoolithus
- †Postligata
Restoration of the Late Triassic crocodile relative Postosuchus with an anachronistic human to scale - †Postosuchus kirkpatricki – type locality for species
- †Praeleda
- †Prionocyclites
- †Prionocyclus
- †Priontropis
- †Priontropis woolgari – or unidentified related form
- †Priscomactra
- †Procardia
- †Procheloniceras
- †Procheloniceras albrechtiaustriae – or unidentified related form
Life restoration of the Late Cretaceous mosasaur Prognathodon preying upon an ammonoid cephalopod - †Promystriosuchus – type locality for genus
- †Promystriosuchus ehleri – type locality for species
- †Proraster
- †Proscincetes
- †Prosiren – type locality for genus
- †Prosiren elinorae – type locality for species
- †Protarca
- †Protecovasaurus – type locality for genus
- †Protecovasaurus lucasi – type locality for species
- †Protexanites
- †Protoavis – type locality for genus
- †Protoavis texensis – type locality for species
- †Protocallianassa
- †Protocallianassa pleuralum – type locality for species
- †Protocardia
- †Protodonax
- †Protohadros – type locality for genus
- †Protohadros byrdi – type locality for species
- †Protoplatyrhina
Life restoration of the Late Cretaceous bony fish Protosphyraena - †Proxestops
- †Pseudananchys
- †Pseudananchys stephensoni – type locality for species
- †Pseudaspidoceras
- †Pseudocalycoceras
- †Pseudoclavulina
- †Pseudocoeniopsis – tentative report
- †Pseudocoeniopsis wintoni – type locality for species
Fossilized teeth of the Cretaceous shark Pseudocorax - †Pseudogaudryinella
- †Pseudohypolophus
- †Pseudolimea
- Pseudomalaxis
Fossilized shell of a Pseudomelania sea snail - †Pseudoncrocarcinus
- †Pseudoperna
- †Pseudopetalodontia
- †Pseudoptera
- †Psilomya
Life restoration of the Late Cretaceous pterosaur Pteranodon - †Pteria
- †Pteria linguaeformis – tentative report
- †Pteria rhombica
- †Pterocerella
- †Pterot
- †Pterot castrovillensis – or unidentified related form
Fossilized shell of the Jurassic-Cretaceous marine bivalve Pterotrigonia - †Ptychomya
- †Ptychotrygon
- †Ptychotrygon vermiculata
- †Ptychotrygon winni – type locality for species
- †Pugnellus
Fossilized shell of the Early-Late Cretaceous ammonoid cephalopod Puzosia - †Puzosia crebrisulcata – or unidentified comparable form
- Pycnodonte
- †Pycnomicrodon
- †Pyrgulifera
- †Pyrifusus
- †Pyrina
- †Pyropsis
- †Pyropsis lanhami
- †Pyropsis proxima – or unidentified related form
Q
- †Quayia – or unidentified comparable form
Mounted fossilized skeleton of the Late Cretaceous pterosaur Quetzalcoatlus - †Quetzalcoatlus northropi – type locality for species
- †Quitmaniceras
- †Quitmanites
R
- †Rachiosoma
- †Rachiosoma hondoensis – type locality for species
- †Radiopecten
- Raja
- †Raja farishi – type locality for species
- †Ramsetia
- †Raninella
- †Remera
- †Remnita
- †Remondia
- Reophax
- †Reptomulticava
- †Restes
- †Rewaconodon – or unidentified related form
- †Rhamphidoceras – type locality for genus
- †Rhamphidoceras saxatilis – type locality for species
- Rhinobatos
- †Rhinobatos craddocki – type locality for species
- †Rhinobatos uvulatus – type locality for species
Restoration of the Late Cretaceous-Paleocene ray Rhombodus - †Rhytidohoplites
- †Rhytophorus – tentative report
- †Richardoestesia
- †Richardoestesia gilmorei
- †Richardoestesia isosceles – type locality for species
- †Rileymillerus – type locality for genus
- †Rileymillerus cosgriffi – type locality for species
A living Ringicula sea snail - Rogerella
- †Rogerella cragini – type locality for species
- †Romaniceras
- Rostellaria – tentative report
- †Russellosaurus – type locality for genus
- †Russellosaurus coheni – type locality for species
Life restoration of the Late Triassic phytosaur Rutiodon
S
- Salenia
- †Salenia hondoensis – type locality for species
- †Sanmiguelia
- †Sanoarca
- †Sargana
Diagram illustrating the Early Cretaceous long-necked dinosaur Sauroposeidon with anachronistic humans to scale - †Saurornitholestes
- †Saurornitholestes langstoni – or unidentified comparable form
- †Sauvagesia – tentative report
- †Saynella
- Scalpellum – tentative report
- †Scambula
Restoration of several of the Early Cretaceous-Miocene shark Scapanorhynchus - †Scapherpeton
- †Scaphites
- †Scaphites bosquensis – type locality for species
- †Scaphites brittonensis
- †Scaphites hippocrepis - or unidentified loosely related form
- †Scaphites rugosus
- †Scaphites warreni
- †Scaphites yorkensis
- †Schizobasis
- Scintilla – tentative report
- †Sciponoceras
Fossilized snout of the Late Cretaceous ray relative Sclerorhynchus - †Sclerorhynchus pettersi – type locality for species
- †Scolomastax – type locality for genus[4]
- †Scolomastax sahlsteini – type locality for species[4]
- Scyliorhinus
- †Scyliorhinus ivagrantae – type locality for species
- †Selaginella – or unidentified comparable form
- †Seminodicrescis
- †Seminola – tentative report
- †Semiometra
- †Semionotus – or unidentified comparable form
- †Senis
- Serpula
- †Serratolamna
- †Sexta
- †Sharpeiceras
- †Shuparoceras
Life restoration of the Late Triassic distant crocodilian relative Shuvosaurus - †Shuvosaurus inexpectatus – type locality for species
- †Siderastrea
- †Siderastrea tuckerae – type locality for species
- †Siderofungia
- †Sierritasuchus – type locality for genus
- †Sierritasuchus macalpini – type locality for species
- †Sinonia
- †Siphodictyum
- Siphotextularia
Fossils of the Cambrian-modern worm burrow ichnogenus Skolithos - Smilotrochus
- †Smilotrochus palmerae – type locality for species
- †Solanocrinites
- Solemya
- †Solemya bilix – tentative report
- †Solenoceras
- †Solyma
- †Spalacotheroides – type locality for genus
- †Spalacotheroides bridwelli – type locality for species
- †Spathites
- †Specus
Opalized shell of the Late Cretaceous ammonoid cephalopod Sphenodiscus - †Spinosuchus – type locality for genus
- †Spinosuchus caseanus – type locality for species
- †Spironema
- Spiroplectammina
- Spondylus
- †Spondylus hilli
- †Spondylus munitus
- †Spondylus siccus – type locality for species
Fossilized tooth of the Late Cretaceous shark Squalicorax - Squalus
- †Squalus huntensis – type locality for species
- †Squatigaleus
- †Squatigaleus sulphurensis – type locality for species
- †Squatirhina
- †Stamenocella
- †Stantonella
- †Stearnsia
- †Stelidioseris
- †Stelidioseris bellensis – type locality for species
- †Stelidioseris pattoni – type locality for species
- †Stelidioseris whitneyi – type locality for species
- †Stellatopollis
- †Steorrosia
- Stephanocoenia – tentative report
- †Stephanomorpha – tentative report
- †Stephanomorpha saxirotundi – type locality for species
- †Stoliczkaia
- †Stoliczkaia argonautiformis
- †Stoliczkaia conlini – type locality for species
- †Stoliczkaia crotaloides
- †Stoliczkaia scotti
- †Stoliczkaia texana – type locality for species
- Stomatopora
- †Stomohamites – tentative report
- Striarca
- †Striaticostatum
Life restoration of the Late Cretaceous ostrich dinosaur Struthiomimus - †Suarodon
- †Sumitomoceras
- †Syncyclonema
- †Synorichthys – tentative report
T
- †Tancredia – tentative report
- †Tanyosphaeridium
- †Tarrantites
- †Tarrantoceras
- †Tarsomordeo – type locality for genus[5]
- †Tarsomordeo winkleri – type locality for species[5]
- †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
Shell of a Tellina, or tellin - †Tellinimera
- †Tenea
Life restoration of the Early Cretaceous Iguanodon relative Tenontosaurus - †Tenontosaurus dossi – type locality for species
- †Tentontosaurus
- †Tenuipteria
- Terebratulina
- †Terebrimya
- Teredolites
- †Terlinguachelys – type locality for genus
- †Terlinguachelys fischbecki – type locality for species
Fossilized skull of the Late Cretaceous crocodilian relative Terminonaris - †Terminonaris robusta – or unidentified comparable form
- †Tetragonites
- †Tetragonites brazoensis – type locality for species
- †Texabatis – type locality for genus
- †Texabatis corrugata – type locality for species
- †Texacephale – type locality for genus
- †Texacephale langstoni – type locality for species
- †Texagryphea
- †Texanites
- †Texasetes – type locality for genus
- †Texasetes pleurohalio – type locality for species
- †Texasia
- †Texicaprina
- †Texigryphaea
- †Texigryphea
Fossilized shell of the Carboniferous-modern foraminiferan Textularia - †Thamnasteria
- †Thamnasteria hoffmeisteri – type locality for species
- †Thamnoseris – tentative report
- †Thamnoseris morchella – type locality for species
- †Thecosmilia – tentative report
- †Thomasites
- †Thomelites
- †Thryptodus[6]
- †Thryptodus loomisi – type locality for species[6]
- †Thylacus
- †Thyracella
- †Tiarasmilia – type locality for genus
- †Tiarasmilia casteri – type locality for species
- †Tibiaporrhais – tentative report
- †Tintorium
- †Tintorium pogodaformis – or unidentified comparable form
- †Titanosarcolites
- †Tornatellaea
Mounted fossilized skeleton of the Late Cretaceous horned dinosaur Torosaurus - †Torosaurus utahensis – or unidentified comparable form
- †Toucasia
- †Tovula
- †Trachybaculites
- Trachycardium
- †Trachyscaphites
- †Trachyscaphites densicostatus – type locality for species
- †Trachyscaphites porchi
- †Trachyscaphites spiniger
- †Trigonarca – tentative report
- †Trigonia
- †Trilophosaurus – type locality for genus
- †Trilophosaurus buettneri – type locality for species
- †Trilophosaurus jacobsi
Life restoration of the Late Cretaceous plesiosaur Trinacromerum - †Trinacromerum bentonianum – type locality for species
- †Trinitichelys – type locality for genus
- †Trinitichelys hiatti – type locality for species
- †Triodus
- †Triopticus – type locality for genus
- †Triopticus primus – type locality for species
- †Tristix
Fossilized shell in multiple views of the Early-Late Cretaceous sea snail Trochactaeon - Trochocyathus
- †Trochocyathus gardnerae – type locality for species
- †Trochocyathus scottianus – type locality for species
- †Trochocyathus sellardsi – type locality for species
- †Trochocyathus taylorensis – type locality for species
- †Trochocyathus wintoni – type locality for species
- †Trochocyathus woolmani
- †Trochoseris
- †Trochoseris shattucki – type locality for species
- †Trochosmilia
- †Trochosmilia stainbrooki – type locality for species
- †Troostella
- Tryonia
- †Tundora
- Turboella
- †Turgidodon
- †Turgidodon lillegraveni – or unidentified comparable form
- †Turrilites
Fossilized shells of the Late Jurassic-modern tower snail Turritella - †Turritella anstini
- †Turritella bilira
- †Turritella delriensis
- †Turritella forgemoli – or unidentified comparable form
- †Turritella hilgardi
- †Turritella houstonia
- †Turritella macnairyensis
- †Turritella marnochi
- †Turritella paravertebroides
- †Turritella quadrilira
- †Turritella seriatimgranulata
- †Turritella shuleri
- †Turritella trilira
- †Turritella vertebroides
- †Turritella vertebroides jonesi
- †Turritella winchelli
- †Turseodus – tentative report
- †Tylosaurus
- †Tylosaurus kansasensis
- †Tylosaurus nepaeolicus
- †Tylosaurus proriger – or unidentified comparable form
- †Typothorax
Fossilized skeleton of the Late Cretaceous tyrannosaur Tyrannosaurus
U
- †Uddenia
- †Uktenadactylus
- †Uktenadactylus wadleighi – type locality for species
- †Unicardium
- Unio
A living Upogebia mud shrimp - †Urceolabrum
- †Urceolabrum mantachieensis – tentative report
- †Urceolabrum tuberculatum
- †Ursirivus
V
- Vaginulina
- Valvulineria
Life restoration of the Late Triassic reptile Vancleavea - †Vascellum
- †Vascellum elegans
- †Vascellum fortispirae
- †Vascellum leve
- †Vascellum magnum
- †Vascellum minusculum
- †Vascellum mundum
- †Vascellum mundum subteres
- †Vascellum pingue
- †Vascellum procerum
- †Vascellum rivanum
- †Vascellum robustum
- †Vascellum subleve
- †Vascellum tensum
- †Vascellum vascellum
- †Vascellum vascellum pressulum
- †Vascellum vascellum subornatum
- †Vascellum vianum
Fossilized shell of the Late Cretaceous ammonoid cephalopod Vascoceras - †Vascoceras cauvini – or unidentified comparable form
- †Vascoceras proprium
- †Vascoceras silvanense
- Venericardia
- †Veniella
- †Vetericardiella
- †Vicarya
- †Vinella
Shell of a Viviparus freshwater snail - Volsella
- †Volutomorpha
- †Voysa
- Vulsella
W
- †Wadeopsammia
Fossilized partial skulls of the Early Cretaceous crocodilian Wannchampsus - †Wannchampsus kirpachi – type locality for species
- †Wannia
- †Wannia scurriensis – type locality for species
- †Washitaster
- †Weeksia
- †Woodbinax
- †Woodbinesuchus – type locality for genus
- †Woodbinesuchus byersmauricei – type locality for species
- †Worthoceras
- †Worthoceras gibbosum
- †Worthoceras vermiculum – or unidentified comparable form
- †Wrightoceras
X
- Xanthosia
- †Xenacanthus – report made of unidentified related form or using admittedly obsolete nomenclature
- Xenophora
Life restoration of the Cretaceous bony fish Xiphactinus - †Xylophagella
Y
References
- ^ a b Albert Prieto-Márquez; Jonathan R. Wagner; Thomas Lehman (2019). "An unusual 'shovel-billed' dinosaur with trophic specializations from the early Campanian of Trans-Pecos Texas, and the ancestral hadrosaurian crest". Journal of Systematic Palaeontology. 18 (6): 461–498. doi:10.1080/14772019.2019.1625078. S2CID 202018197.
- ^ a b Kate A. Andrzejewski; Dale A. Winkler; Louis L. Jacobs (2019). "A new basal ornithopod (Dinosauria: Ornithischia) from the Early Cretaceous of Texas". PLOS ONE. 14 (3): e0207935. Bibcode:2019PLoSO..1407935A. doi:10.1371/journal.pone.0207935. PMC 6413910. PMID 30860999.
- ^ a b Dirk Fuchs; Yasuhiro Iba; Alexander Heyng; Masaya Iijima; Christian Klug; Neal L. Larson; Günter Schweigert (2019). "The Muensterelloidea: phylogeny and character evolution of Mesozoic stem octopods". Papers in Palaeontology. 6: 31–92. doi:10.1002/spp2.1254. S2CID 198256507.
- ^ a b Christopher R. Noto; Stephanie K. Drumheller; Thomas L. Adams; Alan H. Turner (2019). "An enigmatic small neosuchian crocodyliform from the Woodbine Formation of Texas". The Anatomical Record. 303 (4): 801–812. doi:10.1002/ar.24174. PMID 31173481.
- ^ a b Thomas L. Adams (2019). "Small terrestrial crocodyliform from the Lower Cretaceous (late Aptian) of central Texas and its implications on the paleoecology of the Proctor Lake dinosaur locality". Journal of Vertebrate Paleontology. 39 (3): e1623226. doi:10.1080/02724634.2019.1623226. S2CID 198259867.
- ^ a b Kenshu Shimada (2019). "A new species and biology of the Late Cretaceous 'blunt-snouted' bony fish, Thryptodus (Actinopterygii: Tselfatiiformes), from the United States". Cretaceous Research. 101: 92–107. doi:10.1016/j.cretres.2019.04.011. S2CID 150291610.
- Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.
