# 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

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* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* Fossilized shell of the Early-Late Cretaceous ammonoid cephalopod Acanthoceras †Acanthoceras
** †Acanthoceras adkinsi
** †Acanthoceras amphibolum
** †Acanthoceras barcusi
** †Acanthoceras eulessanum
** †Acanthoceras johnsonanum
** †Acanthoceras tarrantense
*** †Acanthoceras tarrantense nitidum
** †Acanthoceras wintoni
** †Acanthoceras worthense
* Acesta
** †Acesta sayeri
** †Acesta sayrei
* Acila
** †Acila chicotana
* Acirsa
** †Acirsa flexicostata – tentative report
* Acmaea
** †Acmaea occidentalis
** †Acmaea pilleolus
* †Acompsoceras
* Life restoration of the Early Cretaceous theropod dinosaur Acrocanthosaurus †Acrocanthosaurus
** †Acrocanthosaurus atokensis
* †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
** †Actinastrea guadalupae
* †Actinostreon
** †Actinostreon gregareum
* †Acutostrea
** †Acutostrea plumosa
* Life restoration of the Late Triassic synapsid (mammal precursor) Adelobasileus †Adelobasileus – type locality for genus
** †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
** †Aenona eufaulensis
* †Aetodactylus – type locality for genus
** †Aetodactylus halli – type locality for species
* †Agerostrea
** †Agerostrea mesenterica
* †Aguileria
** †Aguileria cumminsi
* †Agujaceratops
** †Agujaceratops mariscalensis – type locality for species
* †Akera
** †Akera constricta
* Alamosaurus †Alamosaurus
** †Alamosaurus sanjuanensis
* †Albanerpeton
** †Albanerpeton arthridion – type locality for species
** †Albanerpeton gracilis
** †Albanerpeton nexuosus
* †Aliofusus
** †Aliofusus balaniformis
** †Aliofusus reagani
** †Aliofusus reagani subtilis
** †Aliofusus reagani tumidus
* †Aliomactra
** †Aliomactra compressa
* †Alkaidia – type locality for genus
** †Alkaidia sumralli – type locality for species
* †Allocrioceras
** †Allocrioceras annulatum
** †Allocrioceras dentonense
** †Allocrioceras larvatum
* Alnus
** †Alnus trina
* Restorative model of the Late Cretaceous mammal Alphadon †Alphadon
** †Alphadon halleyi – or unidentified comparable form
** †Alphadon perexiguus – type locality for species
* †Altairia – type locality for genus
** †Altairia wintoni
* †Amaurellina
** †Amaurellina stephensoni
* †Ambigostrea
** †Ambigostrea tecticosta
* †Ambrosea
** †Ambrosea nitida
* Ammobaculites
** †Ammobaculites subcretaceous
** †Ammobaculites subcretaceus
* Fossilized shell of the Jurassic-Miocene sea snail Ampullina †Ampullina – or unidentified comparable form
** †Ampullina abnormalis
** †Ampullina densatus
** †Ampullina lirata
* Amuletum
** †Amuletum boylei
** †Amuletum curvocostatum
** †Amuletum venustum
* Amusium
** †Amusium danei – tentative report
* †Anacolosidites
* †Anaklinoceras
** †Anaklinoceras reflexum
* †Anatimya
** †Anatimya anteradiata
** †Anatimya anteradiata texana
** †Anatimya eulessana
** †Anatimya longula
* †Anchura
** †Anchura bexarensis
** †Anchura caddoensis
** †Anchura campbelli
** †Anchura elegans
** †Anchura hoggi
** †Anchura lamari
** †Anchura modesta
** †Anchura noackensis
** †Anchura noakensis – tentative report
** †Anchura substriata
** †Anchura turricula
** †Anchura whitneyensis
* †Ancilla
** †Ancilla acutula
* †Angistorhinus
** †Angistorhinus alticephalus – type locality for species
** †Angistorhinus grandis
* Reconstructive illustration of a fossilized skull of the Late Cretaceous duck-billed dinosaur Angulomastacator †Angulomastacator – type locality for genus
** †Angulomastacator daviesi – type locality for species
* †Anisoceras
** †Anisoceras armatum
** †Anisoceras perarmatum
* †Anisomyon
** †Anisomyon borealis – tentative report
** †Anisomyon haydeni
* †Anomalina
** †Anomalina petita
** †Anomalina torcerensis
* †Anomalofusus
** †Anomalofusus bellulus
** †Anomalofusus lemniscatus
* Anomia
** †Anomia argentaria
** †Anomia mexicana
** †Anomia ornata
** †Anomia ponticulana
** †Anomia tellinoides
* †Anomoeodus
* †Anomotodon
** †Anomotodon toddi – type locality for species
* †Antillocaprina
* †Apachesaurus
** †Apachesaurus gregorii
* †Aphrodina
** †Aphrodina navarroana
** †Aphrodina tippana
* Aplousina
* †Apsgnathus – type locality for genus
** †Apsgnathus triptodon – type locality for species
* †Aquilarhinus – type locality for genus
** †Aquilarhinus palimentus – type locality for species
* Arca
** †Arca martindalensis
** †Arca pergracilis
** †Arca rostellata
** †Arca securiculata
* Architectonica
** †Architectonica voragiformis
* Arcopsis
** †Arcopsis nolani
* †Arctostrea
** †Arctostrea falacata
* †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
** †Arganodus dorotheae – type locality for species
* Arrhoges
** †Arrhoges cibolensis
** †Arrhoges ciboloensis
** †Arrhoges lobata media
** †Arrhoges plenocosta
* †Asciocythere
** †Asciocythere rotunda
* †Aspidoceras
** †Aspidoceras laevigatum
* †Astacodes
** †Astacodes davisi
** †Astacodes maxwelli
* †Astandes
* Astarte
** †Astarte culebrensis
** †Astarte malonensis
* †Astartemya
** †Astartemya fentressensis
* Electron micrograph and gross view of an Astrangia stony coral Astrangia
** †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 †Astrodon
** †Astrodon johnstoni
* †Astrophocaudia – type locality for genus
** †Astrophocaudia slaughteri – type locality for species
* †Atreta
** †Atreta minor
* †Aulastraeopora – type locality for genus
** †Aulastraeopora harrisi – type locality for species
* †Axonoceras
** †Axonoceras compressum
** †Axonoceras multicostatum
** †Axonoceras multicostatum rotundum
** †Axonoceras pingue
* †Axosmilia
** †Axosmilia craginiana – type locality for species
** †Axosmilia whitneyi – type locality for species

## B

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
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* U
* V
* W
* X
* Y
* Z
* Fossilized shell of the Late Cretaceous ammonoid cephalopod Baculites †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
** †Banis siniformis
* Barbatia – tentative report
** †Barbatia carolinensis
* †Barroisiceras
* Mounted fossilized skeleton of the Cretaceous turtle Basilemys †Basilemys
* †Bathycyathus – tentative report
** †Bathycyathus lloydi – type locality for species
* †Bathytormus
** †Bathytormus pteropsis
* †Belemnitella
** †Belemnitella americana
* †Bellifusus
** †Bellifusus angulicostatus – or unidentified related form
** †Bellifusus buffaloensis
** †Bellifusus coronatus
** †Bellifusus crassicostatus
** †Bellifusus deatsvillensis
** †Bellifusus multicostatus
** †Bellifusus robustus
** †Bellifusus tennistriatus
* †Belliscala
** †Belliscala crideri
** †Belliscala forbeyi
** †Belliscala rockensis
* †Belodon
** †Belodon superciliosus – type locality for species
* Fossilized skeleton of the Late Cretaceous bony fish Belonostomus †Belonostomus
* †Beretra
** †Beretra contracta
** †Beretra elongata
** †Beretra firma
** †Beretra ornatula
** †Beretra ripleyana
** †Beretra striata
* Life restoration of the Early Cretaceous crocodilian relative Bernissartia †Bernissartia – tentative report
* †Betelgeusia – type locality for genus
** †Betelgeusia reidi – type locality for species
* †Borissiakoceras
** †Borissiakoceras orbiculatum
* †Bostrychoceras
** †Bostrychoceras polyplocum
* Botula
** †Botula carolinensis
** †Botula conchafodentis
** †Botula plumosa
* Life restoration of the Late Cretaceous plesiosaur Brachauchenius hunting a hesperornithiform bird †Brachauchenius
** †Brachauchenius lucasi
* Brachidontes
** †Brachidontes arlingtonanus
** †Brachidontes filisculptus
** †Brachidontes filisculptus microcostae
** †Brachidontes fulpensis
* Brachiodontes
* †Brachychampsa
* †Brachycythere – tentative report
** †Brachycythere subconcentrica
* †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 – type locality for genus
** †Bravoceratops polyphemus – type locality for species
* †Breviarca
** †Breviarca grandis
** †Breviarca habita
** †Breviarca minor
** †Breviarca nolani
** †Breviarca plummeri
* †Brontopodus – type locality for genus
** †Brontopodus birdi – type locality for species
* †Buccinopsis
** †Buccinopsis crassa
** †Buccinopsis crassicostata
** †Buccinopsis crassus
** †Buccinopsis globosa
** †Buccinopsis greenensis
** †Buccinopsis perryi
** †Buccinopsis solida
* †Budaia – type locality for genus
** †Budaia travisensis – type locality for species
* †Budaiceras
** †Budaiceras alticarinatum
** †Budaiceras elegantior
** †Budaiceras hyatti
* †Burckhardtites
** †Burckhardtites palmensis
* Busycon – tentative report

## C

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* Cadulus
** †Cadulus coonensis
** †Cadulus obnutus
** †Cadulus praetenuis
* Caestocorbula
** †Caestocorbula crassaplica
** †Caestocorbula crassiplica
** †Caestocorbula suffalciata
** †Caestocorbula terramaria
** †Caestocorbula torta
** †Caestocorbula williardi
* Callianassa
* †Calliomphalus
** †Calliomphalus americanus
** †Calliomphalus bellulus
** †Calliomphalus microcancelli
* Callistina
** †Callistina alta
** †Callistina lamarensis
** †Callistina munda
** †Callistina taffi
* †Callodus – type locality for genus
** †Callodus coronatus – type locality for species
* Callucina
** †Callucina chatfieldana
** †Callucina oleodorsum
** †Callucina seminalis
* †Calyptosuchus – type locality for genus
** †Calyptosuchus wellesi – type locality for species
* Three modern shells of Calyptraea, or Chinese hat snails Calyptraea
* †Camptonectes
** †Camptonectes bellisculptus
** †Camptonectes bubonis
** †Camptonectes burlingtonensis
** †Camptonectes cavanus
** †Camptonectes ellsworthensis
** †Camptonectes kaufmanensis
** †Camptonectes martinsensis
* 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 †Caprina
** †Caprina coraloidea
** †Caprina douvillei
* †Caprinuloidea
** †Caprinuloidea multitubifera
** †Caprinuloidea perfecta
* Capulus
** †Capulus cuthandensis
** †Capulus erectus
** †Capulus microstriatus – tentative report
** †Capulus spangleri
* A living Carcharias sand tiger shark Carcharias
** †Carcharias heathi – type locality for species
** †Carcharias holmdelensis
** †Carcharias samhammeri – or unidentified comparable form
* †Cardiaster
** †Cardiaster leonensis
* Cardium
** †Cardium wadei
* †Caririchnium
** †Caririchnium protohadrosaurichnos – type locality for species
* Carota
** †Carota biplicata
** †Carota pendula
** †Carota robusta
* †Carycorbula
** †Carycorbula martinae
* Caryocorbula
** †Caryocorbula ovisana
** †Caryocorbula tradingensis
** †Caryocorbula varia
* A living Caryophyllia solitary coral Caryophyllia
** †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
** †Casierius heckeli
** †Casierius heckelii
* †Catactegenys – type locality for genus
** †Catactegenys solaster – type locality for species
* †Catastomocystis
** †Catastomocystis spinosa
* Fossilized skeleton of the Permian-Early Cretaceous bony fish Caturus †Caturus
* †Caveola
** †Caveola acuta – tentative report
** †Caveola bellsana
** †Caveola producta
* †Cedarosaurus
** †Cedarosaurus weiskopfae
* †Cenomanocarcinus
** †Cenomanocarcinus refroae
** †Cenomanocarcinus renfroae
** †Cenomanocarcinus vanstraeleni
* Life restoration of the Late Triassic-Eocene lungfish Ceratodus †Ceratodus
** †Ceratodus americanus – or unidentified comparable form
* Ceratotrochus – tentative report
* †Ceriopora
* Cerithiella
** †Cerithiella nodoliratum – or unidentified related form
** †Cerithiella semirugatum
* Cerithium
** †Cerithium simpsonensis
* †Chamops
* †Champsosaurus
* †Chartecytis
* †Cheloniceras
** †Cheloniceras adkinsi
** †Cheloniceras cornuelianum
* Restoration of the Late Triassic theropod dinosaur Chindesaurus †Chindesaurus
** †Chindesaurus bryansmalli
* †Chinlea
** †Chinlea sorenseni
* †Chirostenotes
* †Chondrodonta
** †Chondrodonta glabra
** †Chondrodonta munsoni
** †Chondrodonta youngi – type locality for species
* †Chupacabrachelys – type locality for genus
** †Chupacabrachelys complexus – type locality for species
* Cidaris
** †Cidaris hemigranosus
** †Cidaris texanus
* †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
* †Cinulia
** †Cinulia tarrantensis – or unidentified related form
* †Cionichthys
** †Cionichthys greeni – type locality for species
* †Citharina
** †Citharina kochii
* †Cladoceramus
** †Cladoceramus undulatoplicatus
* †Cladophyllia
** †Cladophyllia furcifera
* †Clavipholas
** †Clavipholas pectorosa
** †Clavipholas whitfieldi
* †Clevosaurus – or unidentified comparable form
** †Clevosaurus latidens
* Life restoration of the Late Cretaceous mosasaurid Clidastes †Clidastes
** †Clidastes liodontus
* Cliona
** †Cliona microtuberum
** †Cliona retiformis
* †Clisocolus
** †Clisocolus concentricum
* †Coahomasuchus – type locality for genus
** †Coahomasuchus kahleorum – type locality for species
* †Coahuilites – tentative report
* †Coalcomana
** †Coalcomana ramosa
* †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 †Coelophysis
* †Coelosmilia
** †Coelosmilia americana
** †Coelosmilia texana
* †Coilopoceras
** †Coilopoceras springeri
* †Collignoniceras
** †Collignoniceras woollgari
* †Colognathus – type locality for genus
** †Colognathus obscurus – type locality for species
* †Colombiceras
** †Colombiceras robustum
* †Columbiceras
** †Columbiceras robustus
* †Comptoniaster
** †Comptoniaster adamsi
* †Confusiscala – tentative report
* †Coniasaurus
** †Coniasaurus crassidens
* †Connectastrea – tentative report
** †Connectastrea infundibuliformis – type locality for species
* Conopeum
* †Continuoolithus
* †Conulus
** †Conulus stephensoni – type locality for species
* †Convolosaurus – type locality for genus
** †Convolosaurus marri – type locality for species
* A living Corbicula basket clam Corbicula
* 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
** †Coskinolinoides texanus
* †Costellacesta
** †Costellacesta sayrei
* †Coupatezia
** †Coupatezia turneri – type locality for species
* †Craginia
** †Craginia turriformis
* Crassatella
** †Crassatella hodgei
** †Crassatella quinlanensis
** †Crassatella vadosa
** †Crassatella vadosa bexarensis
** †Crassatella vadosa cedarensis
** †Crassatella vadosa chatfieldensis
** †Crassatella vadosa manorensis
* Fossilized shell of the Cretaceous-modern oyster Crassostrea Crassostrea
** †Crassostrea cortex
** †Crassostrea cusseta
** †Crassostrea trigonalis
* †Crateraster
** †Crateraster quinqueloba
** †Crateraster texensis
* †Crenella
** †Crenella elegantula
** †Crenella serica
** †Crenella subcircularis
* †Creonella
** †Creonella deusseni
** †Creonella triplicata
** †Creonella whitei
* †Cretacoranina
** †Cretacoranina dichrous
* Fossil of the Early Cretaceous-Eocene shark Cretolamna †Cretolamna
** †Cretolamna appendiculata
** †Cretolamna maroccana
* †Cretorectolobus
** †Cretorectolobus olsoni – or unidentified comparable form
* †Crosbysaurus – type locality for genus
** †Crosbysaurus harrisae – type locality for species
* Ctena
** †Ctena parvilineata
* Shell of a Cucullaea, or false ark shell Cucullaea
** †Cucullaea blanpiedi
** †Cucullaea capax
** †Cucullaea deatvillensis
** †Cucullaea kingsensis
** †Cucullaea murrayi
** †Cucullaea powersi
* †Cuna
** †Cuna texana
* †Curtocaprina – type locality for genus
** †Curtocaprina clabaughikinsorum – type locality for species
* Cuspidaria
** †Cuspidaria alaeformis
** †Cuspidaria ampulla
** †Cuspidaria grandis
** †Cuspidaria grovensis
* †Cyathomorpha – tentative report
** †Cyathomorpha damoni – type locality for species
* †Cyathophora
** †Cyathophora haysensis – type locality for species
** †Cyathophora olssoni – type locality for species
* †Cyclorisma
** †Cyclorisma orbiculata
** †Cyclorisma parva
** †Cyclorisma pumila
* †Cyclothyris
** †Cyclothyris americana
* Cylichna
** †Cylichna incisa
** †Cylichna secalina
* Fossilized shell of the Late Jurassic-Oligocene nautiloid cephalopod Cymatoceras †Cymatoceras
** †Cymatoceras hilli – or unidentified comparable form
** †Cymatoceras texanum
* †Cymbophora
** †Cymbophora appressa
** †Cymbophora berryi
** †Cymbophora cancellosa
** †Cymbophora inflata
** †Cymbophora puteana
** †Cymbophora saccellana
** †Cymbophora scabellum
** †Cymbophora schucherti
** †Cymbophora securis
** †Cymbophora simpsonensis
** †Cymbophora spooneri
** †Cymbophora subtilis
** †Cymbophora wordeni
* †Cymella
** †Cymella bella
** †Cymella bella texana
** †Cymella ironensis
* †Cypridae
** †Cypridae wyomingensis – or unidentified related form
* †Cyprimeria
** †Cyprimeria alta
** †Cyprimeria coonensis
** †Cyprimeria depressa
** †Cyprimeria patella
* Cythere
** †Cythere concentrica
* †Cythereis
** †Cythereis dentonensis
** †Cythereis hawleyi
** †Cythereis nuda
** †Cythereis ornatissima
** †Cythereis paupera
** †Cythereis pustulosissima
** †Cythereis worthensis
* Cytherella
** †Cytherella comanchensis
* Cytherelloidea
** †Cytherelloidea reticulata
** †Cytherelloidea williamsoniana
* Cytheropteron
** †Cytheropteron rugosalatum
* Cyzicus – tentative report
** †Cyzicus shupei

## D

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* Life restoration of the Late Cretaceous primitive mosasaur Dallasaurus †Dallasaurus – type locality for genus
** †Dallasaurus turneri – type locality for species
* †Darwinula
* Dasmosmilia
** †Dasmosmilia kochii – type locality for species
* Dasyatis
** †Dasyatis commercensis – type locality for species
* †Dathmila
** †Dathmila lineola
* †Dawsonius
** †Dawsonius tigris
* Mounted fossilized skeleton of the Late Cretaceous Alligator relative Deinosuchus †Deinosuchus
** †Deinosuchus riograndensis
** †Deinosuchus rugosus – type locality for species
* †Deltaichthys
** †Deltaichthys albuloides
* †Dendrosmilia – tentative report
** †Dendrosmilia texana
* †Denebia – type locality for genus
** †Denebia americana
* Dentalina
** †Dentalina communis
* Dentalium
** †Dentalium inornatum
** †Dentalium leve
** †Dentalium minor
** †Dentalium navarroi
** †Dentalium pauperculum
** †Dentalium sublineatum
** †Dentalium vaughani
* †Dentonia
** †Dentonia leveretti
* Restoration of the Late Triassic aetosaur Desmatosuchus with an anachronistic human to scale †Desmatosuchus
** †Desmatosuchus haplocerus
** †Desmatosuchus smalli – type locality for species
** †Desmatosuchus spurensis – type locality for species
* †Desmoceras
* †Deussenia
** †Deussenia bellalirata
** †Deussenia ciboloensis
** †Deussenia corbis
** †Deussenia multilirae
** †Deussenia travisana
* †Dhondtichlamys
** †Dhondtichlamys venustus
* †Dichastopollenites
* †Dictyoconus
** †Dictyoconus walnutensis
* †Dimorpharaea
** †Dimorpharaea manchacaensis – type locality for species
* †Dimorphastrea
** †Dimorphastrea stantoni – type locality for species
* †Dinogymnium
** †Dinogymnium acuminatum
** †Dinogymnium euclaense
* Diodora – tentative report
** †Diodora bartonvillensis
* Fossilized skeleton of the Late Triassic tuatara relative Diphydontosaurus †Diphydontosaurus – or unidentified related form
* †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
** †Diplomoceras trabeatus
* †Discofascigera
* Discorbis
** †Discorbis correcta
** †Discorbis minima
* †Discoscaphites
** †Discoscaphites conradi
** †Discoscaphites erucoideus
* †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
** †Douvillelia skeltoni
* Shell of a Dreissena freshwater mussel †Dreissena
** †Dreissena tippana
* †Drepanocheilus
** †Drepanocheilus corbetensis
** †Drepanocheilus cuthandensis
** †Drepanocheilus texanus
* †Drepanochilus
** †Drepanochilus corbetensis
** †Drepanochilus davidsi
** †Drepanochilus martini
** †Drepanochilus texanus
** †Drepanochilus triliratus
* †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
** †Dromomeron gregorii – type locality for species
* †Dryptosaurus
* †Dufrenoyia
** †Dufrenoyia justinae
** †Dufrenoyia rebeccae
* †Durania

## E

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* †Echinocorys
** †Echinocorys texanus
* †Ecphora
** †Ecphora proquadricostata
* Fossilized partial skeleton of the Late Cretaceous mosasaur Ectenosaurus †Ectenosaurus
* †Edmontonia – or unidentified comparable form
* †Elea – tentative report
* †Elephantaria
** †Elephantaria simondsi – type locality for species
* †Ellipsoscapha
** †Ellipsoscapha mortoni
** †Ellipsoscapha striatella
* Restoration of the Early Cretaceous-Eocene bony fish Enchodus, or the "saber-toothed herring" †Enchodus
* †Endoplocytia
* †Endoptygma
** †Endoptygma leprosa
* †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
** †Enoploclytia triglypta
** †Enoploclytia wintoni
* †Entolium
* †Eoacteon
** †Eoacteon linteus
* †Eodouvilleiceras
* †Eomunidopsis
** †Eomunidopsis limonitica
* Eonavicula
** †Eonavicula newspecies1
** †Eonavicula rostellata
* †Eoradiolites
** †Eoradiolites davidsoni
* †Eosiderastrea
** †Eosiderastrea cuyleri – type locality for species
* †Eoursivivas
** †Eoursivivas harveyi
* †Epiaster
** †Epiaster whitei
* †Epiphaxum
** †Epiphaxum labyrinthicum – type locality for species
* †Episcoposaurus – type locality for genus
** †Episcoposaurus haplocerus – type locality for species
* †Epistomina
** †Epistomina charlottae
** †Epistomina lacunosa
* †Epistreptophyllum
** †Epistreptophyllum boesei – type locality for species
** †Epistreptophyllum budaensis – type locality for species
** †Epistreptophyllum shumardi – type locality for species
* †Epitonium
** †Epitonium sillimani
* †Etea
** †Etea corsicana
** †Etea peasi
* †Ethmocardium
** †Ethmocardium welleri
* †Eubaculites
** †Eubaculites carinatus
* Fossilized shell of the Late Cretaceous ammonoid cephalopod Eubostrychoceras †Eubostrychoceras
** †Eubostrychoceras reevesi
* †Eucalycoceras
** †Eucalycoceras templetonense – type locality for species
* †Eufistulana
** †Eufistulana ripleyana
* †Eufistulina
** †Eufistulina ripleyana
* †Eugyra
** †Eugyra cuyleri – type locality for species
* †Euhoplites – tentative report
* †Eulima
** †Eulima clara
** †Eulima laevigata
* †Euomphaloceras
** †Euomphaloceras alvaradoense
** †Euomphaloceras lonsdalei
** †Euomphaloceras septemseriatum
* †Eupachydiscus
** †Eupachydiscus grossouvrei
* Shell of a Euspira moon sea snail †Euspira
** †Euspira dorothiensis
** †Euspira dorothiensis pendula
** †Euspira rectilabrum
** †Euspira rectilabrum texanus
** †Euspira rivulana
* Euthriofusus – or unidentified related form
** †Euthriofusus convexus
* †Eutrephoceras
** †Eutrephoceras dekayi
** †Eutrephoceras perlatus
** †Eutrephoceras planoventer
* †Ewingia – type locality for genus
** †Ewingia problematica – type locality for species
* Fossilized shell of the Jurassic-Cretaceous foam oyster Exogyra †Exogyra
** †Exogyra americana
** †Exogyra arientina
** †Exogyra cancellata
** †Exogyra columbella
** †Exogyra columbella levis
** †Exogyra costata
** †Exogyra costata spinifera
** †Exogyra erraticostata
** †Exogyra potosina
** †Exogyra spinifera
** †Exogyra texana

## F

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* Fossilized shell of the Late Cretaceous ammonoid cephalopod Fagesia †Fagesia
** †Fagesia catinus
* †Faraudiella
** †Faraudiella franciscoensis
** †Faraudiella roermeri
* †Faujasia
** †Faujasia chelonium – type locality for species
* †Favia
** †Favia texana
* †Feldmannia
** †Feldmannia wintoni
* †Ficheuria
** †Ficheuria pernoni – or unidentified related form
* †Fictoacteon
** †Fictoacteon alveolanus
** †Fictoacteon humilispira
** †Fictoacteon imlayi
** †Fictoacteon saxanus
* Filisparsa
* †Flaventia
** †Flaventia ludana
* †Flemingostrea
** †Flemingostrea pratti
** †Flemingostrea subspatula
** †Flemingostrea subspatulata
* †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
** †Forbesiceras beaumontianum
** †Forbesiceras brundrettei
** †Forbesiceras conlini
* †Forresteria
** †Forresteria castellense – type locality for species
** †Forresteria forresteri – type locality for species
** †Forresteria sevierense – type locality for species
* †Frenelopsis
** †Frenelopsis ramosissima
* †Fulgerca
** †Fulgerca attenuata – or unidentified related form
** †Fulgerca venusta
* †Fulpia
** †Fulpia pinguis
* †Fungella
* †Fuscinapedis – type locality for genus
** †Fuscinapedis woodbinensis – type locality for species
* †Fusimilis
** †Fusimilis robustus
* A living Fusinus sea snail Fusinus
** †Fusinus cornelianus
** †Fusinus macnairyensis – or unidentified related form

## G

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* A living Galeorhinus galeus school shark Galeorhinus
** †Galeorhinus girardoti – or unidentified related form
* †Gallolestes
** †Gallolestes agujaensis – type locality for species
* †Garramites
** †Garramites nitidus
* Gastrochaena
* Gaudryina
** †Gaudryina austinana
** †Gaudryina cushmani
** †Gaudryina ellisorae
* Gegania
** †Gegania manzaneti
* †Geltena
** †Geltena nitida
** †Geltena obesa
** †Geltena prunoides
** †Geltena subcompressa
** †Geltena subequilatera
** †Geltena sybcompressa
* †Gerdalia
* Fossilized shell of the Carboniferous-Eocene bivalve Gervillia †Gervillia
** †Gervillia bryani
** †Gervillia wellsi – tentative report
* †Gervilliopsis
** †Gervilliopsis ensiformis
** †Gervilliopsis ensiformis extensa
** †Gervilliopsis invaginata
* Ginglymostoma
* †Glenrosa
** †Glenrosa pagiophylloides
** †Glenrosa texensis
* †Globator
** †Globator vaughani – type locality for species
* Illustration of a reconstructed skull of the Late Cretaceous mosasaur Globidens †Globidens
** †Globidens dakotensis
* Globigerina
** †Globigerina cretacea
** †Globigerina washitaensis
* Glossus
** †Glossus bulbosa
** †Glossus hendersoni
** †Glossus irelandi
** †Glossus shumardi
** †Glossus slatana
** †Glossus slatana parva
* Glycymeris
** †Glycymeris rotundata
** †Glycymeris rotundata kaufmanensis
* Fossilized skull and shell of the Late Jurassic-Early Cretaceous turtle Glyptops †Glyptops – tentative report
* †Glyptoxoceras
** †Glyptoxoceras texanum
* †Gobiates
* †Goniochasma
** †Goniochasma scaphoides
* †Goniocylichna
* †Goniophorus
** †Goniophorus scotti
* †Graciliala
** †Graciliala calcaris
** †Graciliala cooki
** †Graciliala johnsoni – tentative report
* †Grammatodon
** †Grammatodon adkinsi
** †Grammatodon bowiei
* †Granocardium
** †Granocardium bowenae
** †Granocardium conradi
** †Granocardium deltanum
** †Granocardium dumosum
** †Granocardium kuemmeli
** †Granocardium kummeli
** †Granocardium lowei
** †Granocardium rossae
** †Granocardium tholi
** †Granocardium tippananum
* †Graphidula
** †Graphidula gabrielensis – tentative report
** †Graphidula hoggi
** †Graphidula lynnensis
** †Graphidula multicostata
** †Graphidula terebriformis
* †Graptocarcinus
** †Graptocarcinus texanus
* †Graysonia
** †Graysonia bergquisti
* †Graysonites
** †Graysonites adkinsi
** †Graysonites wacoense
* †Gryphaea
** †Gryphaea aucella – or unidentified related form
** †Gryphaea gibberosa
** †Gryphaea marcoui
** †Gryphaea pitcheri
** †Gryphaea washitaensis
* †Gryphaeostrea
** †Gryphaeostrea vomer
* Restorative portrait of the Late Cretaceous duck-billed dinosaur Gryposaurus. †Gryposaurus – tentative report
** †Gryposaurus alsatei
* †Guembelina
** †Guembelina globulosa
** †Guembelina paucistriata
* †Gumbelina
* †Gymnentome
** †Gymnentome valida
** †Gymnentome valida brevis
* †Gypsichnites
** †Gypsichnites titanopelopatidus
* Gyrodes
** †Gyrodes abyssinus
** †Gyrodes americanus
** †Gyrodes major
** †Gyrodes petrosus
** †Gyrodes rotundus
** †Gyrodes spillmani
** †Gyrodes subcarinatus
** †Gyrodes supraplicatus
** †Gyrodes tramitensis
* †Gyronchus
** †Gyronchus dumblei
* †Gyrostrea
** †Gyrostrea cortex

## H

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* Shell of Haminoea bubble shell sea snail Haminoea – tentative report
** †Haminoea simpsonensis
* †Hamites
* †Hamrabatis
** †Hamrabatis weltoni – type locality for species
* †Hamulus
** †Hamulus huntensis
** †Hamulus onyx
** †Hamulus squamosus
* †Haplostiche
** †Haplostiche texana
* †Haplovoluta
** †Haplovoluta bicarinata
* †Harduinia
** †Harduinia bexari
** †Harduinia dalli
** †Harduinia mortonis
* †Helicoceras
** †Helicoceras navarroense
* †Helopanoplia
* Hemiaster
** †Hemiaster benhurensis
** †Hemiaster bexari
** †Hemiaster jacksoni
** †Hemiaster sabinal – type locality for species
** †Hemiaster texanus
** †Hemiaster wetherbyi
* †Hemicalypterus – tentative report
** †Hemicalypterus weiri
* Hemicerithium
** †Hemicerithium insigne
** †Hemicerithium interlineatum
* †Hercorhynchus
** †Hercorhynchus malleiformis
* †Hercorhyncus
** †Hercorhyncus coronale
** †Hercorhyncus malleiformis
** †Hercorhyncus mundum
** †Hercorhyncus nodosum
** †Hercorhyncus tippanus
** †Hercorhyncus vadosum
* †Heterocoenia – tentative report
** †Heterocoenia hilli – type locality for species
** †Heterocoenia washitaensis – type locality for species
* Heterodontus
** †Heterodontus granti – type locality for species
* † Heteromorpha
** †Heteromorpha ammonite
* Illustration of a living Hexanchus, or sixgill shark Hexanchus
* †Hillites
** †Hillites multilirae
** †Hillites septarianus
* †Hindeastraea
** †Hindeastraea discoidea
* †Holaster
** †Holaster simplex
* †Holoclemensia – type locality for genus
** †Holoclemensia texana – type locality for species
* Fossil of the Late Cretaceous lobster Hoploparia bearpawensis Homarus
** †Homarus brittonetris
** †Homarus davisi
** †Homarus travisensis
* †Homoeosolen
* †Homomya
** †Homomya thrusheri – tentative report
* †Hoplochelys
* †Hoploscaphites
** †Hoploscaphites pumilis
* †Huetamia
** †Huetamia buitronae
* Life restoration of two of the Permian-Late Cretaceous cartilaginous fish Hybodus --> †Hybodus
** †Hybodus brevicostatus – or unidentified comparable form
** †Hybodus butleri – type locality for species
* †Hydnophora – tentative report
** †Hydnophora styriaca – type locality for species
* †Hydrotribulus
** †Hydrotribulus asper
* †Hylaeobatis – or unidentified comparable form
** †Hylaeobatis ornata
* †Hypacanthoplites
** †Hypacanthoplites bakeri
** †Hypacanthoplites chihuahuaensis
** †Hypacanthoplites cragini
** †Hypacanthoplites quitmanensis
** †Hypacanthoplites rugosus
** †Hypacanthoplites sellardsi
** †Hypacanthoplites umbilicostatus
* †Hypolophus
** †Hypolophus mcnultyi – type locality for species
* †Hypophylloceras
** †Hypophylloceras tanit – or unidentified comparable form
* †Hypoturrilites
** †Hypoturrilites youngi

## I

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* †Ichthyodectes
* Restoration of the Late Cretaceous toothed bird Ichthyornis †Ichthyornis
** †Ichthyornis dispar
* †Idoceras
** †Idoceras clarki
** †Idoceras schucherti
* †Iguanodon – or unidentified comparable form
* Fossilized shell of the Early Jurassic-Late Cretaceous marine bivalve Inoceramus with a human indicating its size †Inoceramus
** †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
** †Irenesauripus glenrosensis
* †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

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* Fossilized shell of the Late Cretaceous ammonoid cephalopod Jeletzkytes †Jeletzkytes
** †Jeletzkytes brevis
* Juliacorbula
** †Juliacorbula linteroidea
** †Juliacorbula monmouthensis

## K

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* †Kamerunoceras
** †Kamerunoceras calvertense
** †Kamerunoceras eschii – or unidentified comparable form
* †Kasanskyella
** †Kasanskyella cuchillensis – tentative report
** †Kasanskyella fosteri
** †Kasanskyella spathi
** †Kasanskyella whitneyi – tentative report
* †Kazanskyella
** †Kazanskyella cuchillense
** †Kazanskyella fosteri
** †Kazanskyella minima
** †Kazanskyella trinitensis
** †Kazanskyella whitneyi
* †Kermackia – type locality for genus
** †Kermackia texana – type locality for species
* †Kimbleia
** †Kimbleia albrittoni
** †Kimbleia capacis
* †Koskinonodon – type locality for genus
** †Koskinonodon perfectus – type locality for species
* Life restoration of the Late Cretaceous duck-billed dinosaur Kritosaurus †Kritosaurus

## L

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* †Laevigyra
** †Laevigyra dhondtae
* †Lamellaerhynchia
** †Lamellaerhynchia indi – type locality for species
** †Lamellaerhynchia viae – type locality for species
* A modern Lamna mackerel shark Lamna
** †Lamna sulcata – or unidentified related form
* †Lanieria
** †Lanieria uvaldana – type locality for species
* †Lasalichthys
** †Lasalichthys hillsi
* Laternula
** †Laternula bartoni
** †Laternula johnsonana
** †Laternula robusta
** †Laternula sublevis
** †Laternula sulcatina
** †Laternula tofana
** †Laternula virgata
* †Latiala
** †Latiala lobata
* †Latiastrea
** †Latiastrea whitneyi
* Shells in multiple views of Latiaxis coral sea snails Latiaxis
* †Latiscopus – type locality for genus
** †Latiscopus disjunctus – type locality for species
* †Laxispira
** †Laxispira lumbricalis
** †Laxispira monilifera
* †Legumen
** †Legumen ellipticum
** †Legumen ligula
* Lenticulina
** †Lenticulina cyprina
** †Lenticulina gaultina
* †Lepidotes
* Lepisosteus
* †Leptarbacia
** †Leptarbacia argutus
* Leptomaria
** †Leptomaria austinensis
** †Leptomaria robusta
†Leptorhynchos – type locality for genus
** †Leptorhynchos gaddisi – type locality for species
* †Leptosolen
** †Leptosolen angustus
** †Leptosolen biplicata
** †Leptosolen levis
** †Leptosolen linguliformis
** †Leptosolen quadrilaterus
** †Leptosolen quadriliratus
* †Leptostyrax
** †Leptostyrax bicuspidatus
** †Leptostyrax macrorhiza
* Fossilized skull of the Late Triassic phytosaur Leptosuchus †Leptosuchus
** †Leptosuchus crosbiensis – type locality for species
** †Leptosuchus imperfecta – type locality for species
** †Leptosuchus studeri – type locality for species
* †Levicerithium
** †Levicerithium altum
** †Levicerithium basicostae
** †Levicerithium breviforme
** †Levicerithium microlirae – tentative report
** †Levicerithium planum
** †Levicerithium timberanum
* †Lewesiceras
* †Lewyites
** †Lewyites clinensis
* †Leyvachelys
** †Leyvachelys cipadi
* †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
** †Libonectes morgani – type locality for species
* Lima
** †Lima acutilineata texana
** †Lima coahuilensis
** †Lima cokei
** †Lima deatsvillensis
** †Lima generosa
** †Lima geronimioensis
** †Lima geronimoensis
** †Lima guadalupensis
** †Lima pelagica
** †Lima wacoensis
* Limatula
** †Limatula acutilineata
* Limea
** †Limea reticulata
* Limopsis
** †Limopsis meeki
* †Linearia
** †Linearia crebelli
* †Linearis
** †Linearis concentrica
** †Linearis metastriata
** †Linearis navarroana
** †Linearis pectinis
** †Linearis wieserae
* Lingula
** †Lingula subspatulata
* †Linter
** †Linter acutata
* †Linthia
** †Linthia variabilis
* A modern Linuparus spiny lobster Linuparus
** †Linuparus adkinsi
** †Linuparus grimmeri
** †Linuparus watkinsi
* †Lioestheria – tentative report
* †Liopeplum
** †Liopeplum cretaceum
** †Liopeplum eiodermum
** †Liopeplum leioderma
** †Liopeplum leioderma breve
** †Liopeplum leioderma longum
** †Liopeplum leioderma tabulatum
** †Liopeplum rugosum
* †Liopistha
** †Liopistha alternata
** †Liopistha formosa
** †Liopistha protexta
* †Liothyris
** †Liothyris carolinensis – or unidentified comparable form
** †Liothyris navarroana
* Liquidambar – tentative report
* †Lirosoma
** †Lirosoma cretacea
* †Lispodesthes
** †Lispodesthes lirata
** †Lispodesthes panda
** †Lispodesthes patula
* †Lissodus
** †Lissodus babulski – or unidentified related form
* Lithacoceras †Lithacoceras
** †Lithacoceras malonianum
* Lithophaga
* †Lomirosa
** †Lomirosa cretacea
* †Lonchidion
** †Lonchidion anitae – type locality for species
** †Lonchidion humblei – type locality for species
** †Lonchidion selachos
* †Longoconcha
** †Longoconcha dalli
** †Longoconcha navarroensis
* Mounted fossilized skeleton of the Late Triassic aetosaur Longosuchus †Longosuchus
** †Longosuchus meadei – type locality for species
** †Longosuchus meadi
* Lopha
** †Lopha falcata
** †Lopha mesenterica
** †Lopha subovata
* †Loriolia
** †Loriolia rosana
* †Lowenstamia
** †Lowenstamia subplanus – or unidentified comparable form
* †Loxostomoides
** †Loxostomoides cushmani
* †Lucasuchus – type locality for genus
** †Lucasuchus hunti – type locality for species
* Lucina
** †Lucina aspera
** †Lucina chatfieldana
** †Lucina dentonana
** †Lucina glebula
** †Lucina oleodorsum
** †Lucina potosina
** †Lucina seminolis
* †Luisogalathea
** †Luisogalathea cretacea
* †Lupira
** †Lupira pyriformis
* †Lutema
** †Lutema geniculata
** †Lutema hubbardi
** †Lutema munda
** †Lutema simpsonensis
* †Lycettia
** †Lycettia tippana
** †Lycettia tippanus
* †Lyriochlamys – tentative report

## M

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* †Macraster
** †Macraster arguilera
** †Macraster elegans
** †Macraster nodopyda
* †Macrepistius
* †Macrocerithium
** †Macrocerithium tramitense
* †Macromesodon
** †Macromesodon dumblei
* †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 †Malerisaurus
* Malletia
** †Malletia littlei
** †Malletia longfrons
** †Malletia longifrons
** †Malletia stephensoni
* †Mammites
** †Mammites powelli – type locality for species
* †Mantelliceras
** †Mantelliceras cantianum
** †Mantelliceras martimpreyi – or unidentified comparable form
** †Mantelliceras saxbii
* †Margaritella
** †Margaritella pumila
* Fossilized shell of the Early-Late Cretaceous ammonoid cephalopod Mariella †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 †Martinectes
** †Martinectes bonneri
* †Mataxa
** †Mataxa subteres
** †Mataxa valida
** †Mataxa valida multilirae
* †Mathilda
** †Mathilda cedarensis
** †Mathilda corona
* †Meandraraea
** †Meandraraea plummeri – type locality for species
** †Meandraraea tulae – or unidentified comparable form
* †Medionapus
** †Medionapus elongatus
* Megalomphalus – or unidentified comparable form
* †Megalosauropus – tentative report
** †Megalosauropus titanopelobatidus – type locality for species
* Melanatria
** †Melanatria venusta
* †Melicertites
* Membranipora
* Membraniporidra
* †Menabites
** †Menabites austinensis
** †Menabites danei
** †Menabites delawarensis
** †Menabites vanuxemi
* Fossilized skull of the Late Cretaceous multituberculate mammal Meniscoessus †Meniscoessus
* †Menuites
* Mesalia
** †Mesalia shumardi
* †Mesodma
* †Mesomorpha
** †Mesomorpha excavata
** †Mesomorpha vaughani – type locality for species
* †Metengonoceras
** †Metengonoceras acutum
** †Metengonoceras ambiguum
** †Metengonoceras bravoense
** †Metengonoceras dumbli
** †Metengonoceras inscriptum
* †Metoicoceras
** †Metoicoceras crassicostae
** †Metoicoceras geslinianum
** †Metoicoceras latoventer
** †Metoicoceras swallovi
** †Metoicoceras swallovii
** †Metoicoceras swallovii macrum
* Life restoration of the Late Triassic amphibian Metoposaurus with an anachronistic human to scale †Metoposaurus
** †Metoposaurus bakeri – type locality for species
** †Metoposaurus fraasi
** †Metoposaurus jonesi – type locality for species
** †Metoposaurus perfecta
* †Mexicaprina
** †Mexicaprina cornuta
* †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
** †Miocardiopsis hendersoni
** †Miocardiopsis shumardi
* Fossilized shell of the Devonian-modern marine bivalve Modiolus, or horsemussel †Modiolus
** †Modiolus sedesclaris
** †Modiolus sedesclarus
** †Modiolus sedisclarus
* Monodonta – tentative report
** †Monodonta cancellosa
* †Monopleura – tentative report
* †Monroea
** †Monroea castellana
* 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
** †Morea cancellaria
** †Morea cancellaria corsicanensis
** †Morea cancellaria crassa
** †Morea marylandica
** †Morea marylandica bella
** †Morea marylandica languida
** †Morea transenna
* †Moremanoceras
** †Moremanoceras elgini
** †Moremanoceras flexuosum – type locality for species
* †Morphastrea
** †Morphastrea barcenai – or unidentified comparable form
* †Mortoniceras
** †Mortoniceras austinensis
** †Mortoniceras drakei
** †Mortoniceras maxima
** †Mortoniceras minima
** †Mortoniceras perinflatum
** †Mortoniceras rostratum
** †Mortoniceras wintoni
* Life restoration of two of the Late Cretaceous Mosasaurus †Mosasaurus
** †Mosasaurus maximus
** †Mosasaurus missouriensis – tentative report
* †Muensterella
** †Muensterella jillae – type locality for species
* †Myobarbum
** †Myobarbum laevigatum
* †Myriophyllia – tentative report
** †Myriophyllia dumblei – type locality for species
* Myrtea
** †Myrtea stephensoni
* †Mytiloides
** †Mytiloides columbianus
* †Mytilus

## N

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* †Naomichelys
* †Napulus
** †Napulus octoliratus
** †Napulus tuberculatus
* Multiple views of a fossilized shell belonging to a Natica moon snail Natica
** †Natica dorothiensis
** †Natica humilis
** †Natica rivulana
** †Natica striaticostata
* Nebrius
* †Neithea
** †Neithea bexarensis
** †Neithea quinquecostata
* †Nelltia
** †Nelltia stenzeli
* †Nemocardium
** †Nemocardium fragile
** †Nemocardium guadalupense
** †Nemocardium marcosensis
** †Nemocardium tenue
* †Nemodon
** †Nemodon adkinsi
** †Nemodon bowiei
** †Nemodon eufalensis
** †Nemodon eufaulensis
** †Nemodon eufaulensis lineatus
** †Nemodon grandis
** †Nemodon grandis navarroanus
** †Nemodon martindalensis
** †Nemodon navarroanus
** †Nemodon punctus
* †Neobrites
** †Neobrites nodocostatus
* †Neocardioceras
** †Neocardioceras juddii
* †Neodeshayesites
** †Neodeshayesites comalensis
** †Neodeshayesites mayfieldensis
* †Neogauthiericeras
** †Neogauthiericeras zafimahovai
* Opalized guard of the belemnoid cephalopod Neohibolites †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
** †Nerita ornata
** †Nerita semilevis
* Living Neritina or nerite snails Neritina
** †Neritina ambrosana
** †Neritina insolita
* Nodosaria
** †Nodosaria barkeri
* †Nonactaeonina
** †Nonactaeonina deflexa
** †Nonactaeonina graphoides
** †Nonactaeonina tensa
** †Nonactaeonina triticea
* †Nonaphalagodus – type locality for genus
** †Nonaphalagodus trinitiensis – type locality for species
* Restoration of several species of the Late Cretaceous ammonoid cephalopod Nostoceras †Nostoceras
** †Nostoceras approximans
** †Nostoceras colubriformis
** †Nostoceras draconsis
** †Nostoceras helicinum crassum
** †Nostoceras helicinum humile
** †Nostoceras helicinus
** †Nostoceras hyatti
** †Nostoceras splendidum
** †Nostoceras stantoni aberrans
** †Nostoceras stantoni prematurum
* †Notodonax
* †Notopoides – tentative report
** †Notopoides pflugervillensis – type locality for species
* †Nucleopygus
** †Nucleopygus texanus
* Interior of a fossilized shell of the Early Ordovician-modern marine bivalve Nucula Nucula
** †Nucula camia
** †Nucula chatfieldensis
** †Nucula chatsfieldensis
** †Nucula ciboloensis
** †Nucula cuneifrons
** †Nucula microstriata
** †Nucula nacatochana
** †Nucula percrassa
** †Nucula perequalis
** †Nucula rivulana
** †Nucula stantoni
** †Nucula waltonensis
* Nuculana
** †Nuculana coloradoensis
** †Nuculana corbetensis
** †Nuculana corsicana
** †Nuculana houstoni
** †Nuculana mutuata
** †Nuculana protexta
** †Nuculana rostratruncata
** †Nuculana travisana
** †Nuculana whitfieldi
* †Nudivagus – tentative report
* †Nymphalucina
** †Nymphalucina linearia
** †Nymphalucina parva
* †Nyssa

## O

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* †Odaxosaurus
** †Odaxosaurus piger
* A living Odontaspis sand shark Odontaspis
** †Odontaspis aculeatus
* †Ogilviastraea – tentative report
** †Ogilviastraea richardsi – type locality for species
* †Oklatheridium
** †Oklatheridium minax
** †Oklatheridium szalayi
* †Oligoptycha
** †Oligoptycha americana – tentative report
* †Onchopristis
** †Onchopristis dunklei
* Fossilized vertebrae of the Cretaceous sawfish Onchosaurus †Onchosaurus
* †Opertochasma
** †Opertochasma scaphoides
** †Opertochasma subconicum
** †Opertochasma venustum
* †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 †Ornithomimus
* †Ornopsis
** †Ornopsis digressa
** †Ornopsis maxeyi
** †Ornopsis pulchra
** †Ornopsis solistella
* †Ostlingoceras
** †Ostlingoceras brandi
* Shell of an Ostrea, or oyster Ostrea
** †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
** †Oxyrhina extenta
* †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

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* †Pachycheilosuchus – type locality for genus
** †Pachycheilosuchus trinquei – type locality for species
* †Pachydesmoceras
* †Pachydiscus
** †Pachydiscus arkansanus
** †Pachydiscus paulsoni
** †Pachydiscus scotti
** †Pachydiscus travisi
* Restorative portrait of the Early Jurassic synapsid (mammal precursor) Pachygenelus †Pachygenelus
** †Pachygenelus milleri – type locality for species
* †Pachymelania
* †Pachymya
* Pagurus
** †Pagurus travisensis
* †Paladmete
** †Paladmete alta
** †Paladmete cancellaria
** †Paladmete cancelleria
** †Paladmete corbuliformis
** †Paladmete elegans
** †Paladmete gardnerae
** †Paladmete inequalis
* Fossilized skeleton of the Early Cretaceous-Eocene bony fish Palaeobalistum †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
** †Palaeocypraea corsicanana
** †Palaeocypraea nuciformis
* †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
** †Paleopsephaea decorosa
** †Paleopsephaea patens
** †Paleopsephaea sinuosa
** †Paleopsephaea vadoana
* Life restoration of the Late Triassic phytosaur Paleorhinus †Paleorhinus
** †Paleorhinus sawini – type locality for species
* †Paluxysuchus – type locality for genus
** †Paluxysuchus newmani – type locality for species
* †Panis
** †Panis cuneiformis
* Panopea
** †Panopea anacachoensis – type locality for species
** †Panopea subplicata
* †Pantojaloria
** †Pantojaloria sphaerica
* †Pappotherium – type locality for genus
** †Pappotherium pattersoni – type locality for species
* †Paracimexomys
* Paracyprideis
** †Paracyprideis graysonensis
* Paracypris
** †Paracypris alta
* †Parafusus – tentative report
* †Parahoplites
** †Parahoplites thomasi
** †Parahoplites wintoni
* †Paraisurus
** †Paraisurus compressus
* †Paramicrodon – type locality for genus
** †Paramicrodon estesi – type locality for species
* †Parandiceras
** †Parandiceras indicum – or unidentified comparable form
* †Paranecrocarcinus
** †Paranecrocarcinus moseleyi
* †Paranecrocarinus
** †Paranecrocarinus ovalis
* †Paranomia
** †Paranomia scabra
* Fossilized shell of the Late Cretaceous ammonoid cephalopod Parapuzosia with a human indicating its size †Parapuzosia
** †Parapuzosia americana – type locality for species
** †Parapuzosia bosei – type locality for species
** †Parapuzosia sealei – type locality for species
* †Parasaniwa – or unidentified comparable form
** †Parasaniwa wyomingensis
* Parasmilia
** †Parasmilia austinensis
** †Parasmilia bullardi – type locality for species
** †Parasmilia graysonensis – type locality for species
* †Parasuchus
** †Parasuchus bransoni
* Mounted fossilized skeleton of the Late Triassic aetosaur Paratypothorax †Paratypothorax
* †Paraxiopsis
** †Paraxiopsis erugatus
* †Parengonoceras
** †Parengonoceras roemeri
* †Parmicorbula
** †Parmicorbula corneliana
** †Parmicorbula hillensis
** †Parmicorbula numerosa
** †Parmicorbula rupana
** †Parmicorbula sinuosa
** †Parmicorbula suffalciata
** †Parmicorbula terramaria
** †Parmicorbula vokesi
* †Paronychodon
** †Paronychodon lacustris – or unidentified comparable form
* Parvamussium
** †Parvamussium danei
* †Parvivoluta – tentative report
* Patellina
** †Patellina subcretacea
* Fossilized skull in multiple views of the Early Cretaceous armored dinosaur Pawpawsaurus †Pawpawsaurus – type locality for genus
** †Pawpawsaurus campbelli – type locality for species
* †Pecten
** †Pecten bellula
** †Pecten bellulus
** †Pecten catherina
** †Pecten georgetownensis
** †Pecten moodyi
** †Pecten subalpinus
** †Pecten texanus
** †Pecten venustus
** †Pecten wrighti
* †Pedinopsis
** †Pedinopsis pondi
* †Peilinia
** †Peilinia quadriplicata
* †Pekinosaurus – or unidentified related form
** †Pekinosaurus olseni
* †Peneteius
* Periploma
** †Periploma edwardsi
* †Periplomya
** †Periplomya sulcatina
* Perna – report made of unidentified related form or using admittedly obsolete nomenclature
** †Perna texana
* †Perrisonota
** †Perrisonota littlei
** †Perrisonota protexta
* Petrophyllia
* †Phacellocoenia – tentative report
** †Phacellocoenia tolmachoffana – type locality for species
* Phacoides
** †Phacoides mattiformis
* †Pharodina
** †Pharodina ferrana
* †Phelopteria
** †Phelopteria dalli
** †Phelopteria linguaeformis
** †Phelopteria timberensis
* Pholadidea
** †Pholadidea ragsdalensis
* Fossilized shell of the Early Triassic-Pliocene marine bivalve Pholadomya Pholadomya
** †Pholadomya coahuilensis
** †Pholadomya goldenensis
** †Pholadomya ingens
** †Pholadomya littlei
** †Pholadomya occidentalis
** †Pholadomya shattucki
* Pholas
** †Pholas scaphoides
* †Phyllobrissus
** †Phyllobrissus cubensis
* Phymosoma †Phymosoma
** †Phymosoma hilli
* †Phytosaurus
* †Piestochilus
** †Piestochilus curviliratus
** †Piestochilus levis
* †Pinella
** †Pinella reticulata
* †Pinna
** †Pinna laqueata
* †Pirsila
** †Pirsila decora
** †Pirsila simpla
** †Pirsila tensa
* Pitar
** †Pitar yoakumi
* Fossilized shell of the Late Cretaceous ammonoid cephalopod Placenticeras †Placenticeras
** †Placenticeras interealare
** †Placenticeras meeki
** †Placenticeras syrtale
* Placopsilina
** †Placopsilina minima
* †Placotrochus
** †Placotrochus texanus
* Plagioecia
* †Planocephalosaurus
** †Planocephalosaurus lucasi – type locality for species
* Planulina
** †Planulina eaglefordensis
* Restoration of the Late Cretaceous mosasaur Platecarpus †Platecarpus
** †Platecarpus planifrons
** †Platecarpus somenensis – or unidentified comparable form
** †Platecarpus tympaniticus
* †Platiknemiceras
** †Platiknemiceras flexuosum
* †Platyceramus
** †Platyceramus cycloides
** †Platyceramus mantelli - or unidentified loosely related form
* Life restoration of the Early-Late Cretaceous ichthyosaur Platypterygius †Platypterygius
* †Plesiacanthoceras
** †Plesiacanthoceras bellsanum
* †Plesiosaurus
* †Pleuriocardia
** †Pleuriocardia eufaulense
** †Pleuriocardia eufaulensis huntanum
* †Pleurocora
** †Pleurocora coalescens
* †Pleuromya
** †Pleuromya inconstans
* †Pleurosmilia
** †Pleurosmilia quaylei – type locality for species
** †Pleurosmilia saxifisi – type locality for species
* Fossilized shell of a Pleurotomaria slit snail Pleurotomaria
** †Pleurotomaria macilenta
* †Plicatolamna – or unidentified comparable form
** †Plicatolamna arcuata
* †Plicatoscyllium – type locality for genus
** †Plicatoscyllium antiquum – type locality for species
** †Plicatoscyllium derameei – type locality for species
* Plicatula
** †Plicatula clarki
** †Plicatula dentonensis
** †Plicatula goldenana
** †Plicatula incongrua
** †Plicatula mullicaensis
** †Plicatula tetrica
* †Plioaxius
** †Plioaxius texensis
* Life restoration of the Late Cretaceous mosasaur Plioplatecarpus †Plioplatecarpus – tentative report
* †Poecilocrinus
** †Poecilocrinus dispandus
* Polinices
** †Polinices kummeli
** †Polinices stephensoni
* †Pollex
** †Pollex angulatus
** †Pollex obesus
* †Polyacrodus
** †Polyacrodus parvidens – or unidentified related form
* †Polyptychodon
** †Polyptychodon hudsoni – type locality for species
* †Polytremacis
** †Polytremacis hancockensis – type locality for species
** †Polytremacis urgonensis
* †Pontocyprella
** †Pontocyprella alexanderi
* †Poposaurus
** †Poposaurus gracilis
** †Poposaurus langstoni
* †Porituberoolithus
* †Postligata
* 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
* †Praeleda
** †Praeleda compar
* †Prionocyclites
** †Prionocyclites mite
* †Prionocyclus
** †Prionocyclus albinus
** †Prionocyclus hyatti
** †Prionocyclus macombi
** †Prionocyclus wyomingensis
* †Priontropis
** †Priontropis woolgari – or unidentified related form
* †Priscomactra
** †Priscomactra cymba
** †Priscomactra munda
* †Procardia
** †Procardia torta
* †Procheloniceras
** †Procheloniceras albrechtiaustriae – or unidentified related form
* Life restoration of the Late Cretaceous mosasaur Prognathodon preying upon an ammonoid cephalopod †Prognathodon – tentative report
* †Promystriosuchus – type locality for genus
** †Promystriosuchus ehleri – type locality for species
* †Proraster
** †Proraster dalli
* †Proscincetes
** †Proscincetes texanus
* †Prosiren – type locality for genus
** †Prosiren elinorae – type locality for species
* †Protarca
** †Protarca tramitensis
* †Protecovasaurus – type locality for genus
** †Protecovasaurus lucasi – type locality for species
* †Protexanites
** †Protexanites planatus
* †Protoavis – type locality for genus
** †Protoavis texensis – type locality for species
* †Protocallianassa
** †Protocallianassa pleuralum – type locality for species
* †Protocardia
** †Protocardia guadalupense
** †Protocardia hillana
** †Protocardia marcosensis
** †Protocardia spillmani
** †Protocardia texana
** †Protocardia timberensis
** †Protocardia torta
** †Protocardia wadei
* †Protodonax
** †Protodonax lingulatus
** †Protodonax lingulatus tensus
** †Protodonax robustus
* †Protohadros – type locality for genus
** †Protohadros byrdi – type locality for species
* †Protoplatyrhina
** †Protoplatyrhina renae
* Life restoration of the Late Cretaceous bony fish Protosphyraena †Protosphyraena
* †Proxestops
* †Pseudananchys
** †Pseudananchys stephensoni – type locality for species
* †Pseudaspidoceras
** †Pseudaspidoceras flexuosum
* †Pseudocalycoceras
** †Pseudocalycoceras angolaense
* †Pseudoclavulina
** †Pseudoclavulina clavata
* †Pseudocoeniopsis – tentative report
** †Pseudocoeniopsis wintoni – type locality for species
* Fossilized teeth of the Cretaceous shark Pseudocorax †Pseudocorax
** †Pseudocorax granti
* †Pseudogaudryinella
** †Pseudogaudryinella capitosa
* †Pseudohypolophus
* †Pseudolimea
** †Pseudolimea kimbroensis
** †Pseudolimea reticulata
** †Pseudolimea sellardsi
* Pseudomalaxis
** †Pseudomalaxis patens
** †Pseudomalaxis pateriformis
* Fossilized shell of a Pseudomelania sea snail †Pseudomelania
** †Pseudomelania basicostata
** †Pseudomelania ferrata
** †Pseudomelania roanokana
* †Pseudoncrocarcinus
** †Pseudoncrocarcinus scotti
* †Pseudoperna
** †Pseudoperna congesta
* †Pseudopetalodontia
** †Pseudopetalodontia felixi
* †Pseudoptera
** †Pseudoptera hornensis
** †Pseudoptera hornesis
** †Pseudoptera rushana
** †Pseudoptera serrata
** †Pseudoptera viana
* †Psilomya
** †Psilomya concentrica
** †Psilomya levis
* Life restoration of the Late Cretaceous pterosaur Pteranodon †Pteranodon – or unidentified comparable form
* †Pteria
** †Pteria linguaeformis – tentative report
** †Pteria rhombica
* †Pterocerella
** †Pterocerella densatus
** †Pterocerella densatus nacatochanus
** †Pterocerella poinsettiformis
** †Pterocerella robustus
* †Pterot
** †Pterot castrovillensis – or unidentified related form
* Fossilized shell of the Jurassic-Cretaceous marine bivalve Pterotrigonia †Pterotrigonia
** †Pterotrigonia castrovillensis
** †Pterotrigonia eufalensis
** †Pterotrigonia eufaulensis
** †Pterotrigonia eufaulensis gabbi
** †Pterotrigonia marionensis
** †Pterotrigonia stantoni
* †Ptychomya
** †Ptychomya stantonii
* †Ptychotrygon
** †Ptychotrygon vermiculata
** †Ptychotrygon winni – type locality for species
* †Pugnellus
** †Pugnellus densatus
** †Pugnellus goldmani
* Fossilized shell of the Early-Late Cretaceous ammonoid cephalopod Puzosia †Puzosia
** †Puzosia crebrisulcata – or unidentified comparable form
* Pycnodonte
** †Pycnodonte belli
** †Pycnodonte mutabilis
** †Pycnodonte vesicularis
* †Pycnomicrodon
** †Pycnomicrodon texanus
* †Pyrgulifera
** †Pyrgulifera costata
** †Pyrgulifera costata sublevis
** †Pyrgulifera costata tuberata
** †Pyrgulifera ornata
* †Pyrifusus
* †Pyrina
** †Pyrina parryi
* †Pyropsis
** †Pyropsis lanhami
** †Pyropsis proxima – or unidentified related form

## Q

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* †Quayia – or unidentified comparable form
** †Quayia zideki
* Mounted fossilized skeleton of the Late Cretaceous pterosaur Quetzalcoatlus †Quetzalcoatlus – type locality for genus
** †Quetzalcoatlus northropi – type locality for species
* †Quitmaniceras
** †Quitmaniceras reaseri
* †Quitmanites
** †Quitmanites ceratitosus
** †Quitmanites evolutus

## R

* A
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* M
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* O
* P
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* U
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* W
* X
* Y
* Z
* †Rachiosoma
** †Rachiosoma hondoensis – type locality for species
* †Radiopecten
** †Radiopecten mississippiensis
* Raja
** †Raja farishi – type locality for species
* †Ramsetia
** †Ramsetia whitfieldi
* †Raninella
* †Remera
** †Remera decora
** †Remera juncea
** †Remera microstriata
* †Remnita
** †Remnita anomalocostata
** †Remnita biacuminata
* †Remondia
** †Remondia robbinsi
* Reophax
** †Reophax deckeri
* †Reptomulticava
* †Restes
* †Rewaconodon – or unidentified related form
** †Rewaconodon tikiensis
* †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 †Rhombodus
** †Rhombodus binkhorsti
* †Rhytidohoplites
** †Rhytidohoplites robertsi
* †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 Ringicula
** †Ringicula anfractoline
** †Ringicula arlingtonensis
** †Ringicula culbertsoni
** †Ringicula pulchella
** †Ringicula sufflata
* Rogerella
** †Rogerella cragini – type locality for species
* †Romaniceras
** †Romaniceras aguilerai
** †Romaniceras zacatecana
* Rostellaria – tentative report
** †Rostellaria robertsi
* †Russellosaurus – type locality for genus
** †Russellosaurus coheni – type locality for species
* Life restoration of the Late Triassic phytosaur Rutiodon †Rutiodon

## S

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* Z
* Salenia
** †Salenia hondoensis – type locality for species
* †Sanmiguelia
* †Sanoarca
** †Sanoarca faucana
** †Sanoarca grandis
* †Sargana
** †Sargana stantoni
* 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
** †Sauvagesia hilli
* †Saynella
** †Saynella hilli
* Scalpellum – tentative report
* †Scambula
** †Scambula perplana
* Restoration of several of the Early Cretaceous-Miocene shark Scapanorhynchus †Scapanorhynchus
** †Scapanorhynchus texanus
** †Scapanorhynchus textanus
* †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
** †Scintilla ramoni
* †Sciponoceras
** †Sciponoceras gracile
* Fossilized snout of the Late Cretaceous ray relative Sclerorhynchus †Sclerorhynchus
** †Sclerorhynchus pettersi – type locality for species
* †Scolomastax – type locality for genus
** †Scolomastax sahlsteini – type locality for species
* Scyliorhinus
** †Scyliorhinus ivagrantae – type locality for species
* †Selaginella – or unidentified comparable form
* †Seminodicrescis
* †Seminola – tentative report
* †Semiometra
** †Semiometra minuta
* †Semionotus – or unidentified comparable form
* †Senis
** †Senis elongata
** †Senis elongatus
* Serpula
** †Serpula cretacea
** †Serpula implicata
** †Serpula lineata
* †Serratolamna
** †Serratolamna serrata
* †Sexta
** †Sexta ethelana
** †Sexta navicula
* †Sharpeiceras
** †Sharpeiceras schlueteri
** †Sharpeiceras tlahualiloense
* †Shuparoceras
* Life restoration of the Late Triassic distant crocodilian relative Shuvosaurus †Shuvosaurus – type locality for genus
** †Shuvosaurus inexpectatus – type locality for species
* †Siderastrea
** †Siderastrea tuckerae – type locality for species
* †Siderofungia
** †Siderofungia irregularis
* †Sierritasuchus – type locality for genus
** †Sierritasuchus macalpini – type locality for species
* †Sinonia
** †Sinonia levis
* †Siphodictyum
* Siphotextularia
** †Siphotextularia washitaensis
* Fossils of the Cambrian-modern worm burrow ichnogenus Skolithos †Skolithos
* Smilotrochus
** †Smilotrochus palmerae – type locality for species
* †Solanocrinites
** †Solanocrinites wertheimi
* Solemya
** †Solemya bilix – tentative report
* †Solenoceras
** †Solenoceras multicostatum
** †Solenoceras reesidei
** †Solenoceras texanum
* †Solyma
** †Solyma bilix
** †Solyma elliptica
** †Solyma gardnerae
** †Solyma parva
** †Solyma stewarti
* †Spalacotheroides – type locality for genus
** †Spalacotheroides bridwelli – type locality for species
* †Spathites
** †Spathites coahuilaensis
** †Spathites rioensis
* †Specus
** †Specus fimbriatus
* Opalized shell of the Late Cretaceous ammonoid cephalopod Sphenodiscus †Sphenodiscus
** †Sphenodiscus intermedius
** †Sphenodiscus lobatus
** †Sphenodiscus pleurisepta
** †Sphenodiscus tirensis
* †Spinosuchus – type locality for genus
** †Spinosuchus caseanus – type locality for species
* †Spironema
** †Spironema perryi
* Spiroplectammina
** †Spiroplectammina ammovitrea
** †Spiroplectammina goodlandana
* Spondylus
** †Spondylus hilli
** †Spondylus munitus
** †Spondylus siccus – type locality for species
* Fossilized tooth of the Late Cretaceous shark Squalicorax Squalicorax
** †Squalicorax kaupi
** †Squalicorax pristodontus
* Squalus
** †Squalus huntensis – type locality for species
* †Squatigaleus
** †Squatigaleus sulphurensis – type locality for species
* †Squatirhina
** †Squatirhina americana
* †Stamenocella
* †Stantonella
** †Stantonella interrupta
* †Stearnsia
** †Stearnsia robbinsi
* †Stelidioseris
** †Stelidioseris bellensis – type locality for species
** †Stelidioseris pattoni – type locality for species
** †Stelidioseris whitneyi – type locality for species
* †Stellatopollis
* †Steorrosia
** †Steorrosia aspera
* 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
** †Striarca cuneata
** †Striarca plummeri
** †Striarca saffordi
** †Striarca webbervillensis
* †Striaticostatum
** †Striaticostatum bexarense
** †Striaticostatum pondi
** †Striaticostatum sparsum
* Life restoration of the Late Cretaceous ostrich dinosaur Struthiomimus †Struthiomimus – or unidentified comparable form
* †Suarodon
* †Sumitomoceras
** †Sumitomoceras bentonianum
* †Syncyclonema
** †Syncyclonema archeri
** †Syncyclonema kingi
** †Syncyclonema simplicius
** †Syncyclonema travisanus
* †Synorichthys – tentative report
** †Synorichthys stewarti

## T

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* †Tancredia – tentative report
* †Tanyosphaeridium
** †Tanyosphaeridium salpinx
* †Tarrantites
** †Tarrantites adkinsi
* †Tarrantoceras
** †Tarrantoceras cuspidum
** †Tarrantoceras sellardsi
* †Tarsomordeo – type locality for genus
** †Tarsomordeo winkleri – type locality for species
* †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 Tellina
** †Tellina duganensis
** †Tellina dugansensis
** †Tellina munda
** †Tellina parkerana
** †Tellina patula
** †Tellina rivana
** †Tellina stabulana
* †Tellinimera
** †Tellinimera buboana
** †Tellinimera gabbi
** †Tellinimera munda
* †Tenea
** †Tenea parilis
** †Tenea patula
* Life restoration of the Early Cretaceous Iguanodon relative Tenontosaurus †Tenontosaurus
** †Tenontosaurus dossi – type locality for species
* †Tentontosaurus
* †Tenuipteria
** †Tenuipteria argentea
** †Tenuipteria argenteus
* Terebratulina
** †Terebratulina filosa
** †Terebratulina noackensis
* †Terebrimya
** †Terebrimya lamarana
* Teredolites
* †Terlinguachelys – type locality for genus
** †Terlinguachelys fischbecki – type locality for species
* Fossilized skull of the Late Cretaceous crocodilian relative Terminonaris †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
** †Texanites dentatocarinatum
** †Texanites gallicus
** †Texanites vanhoepeni
* †Texasetes – type locality for genus
** †Texasetes pleurohalio – type locality for species
* †Texasia
** †Texasia dartoni
* †Texicaprina
** †Texicaprina vivari
* †Texigryphaea
** †Texigryphaea sashitaensis
* †Texigryphea
** †Texigryphea washitaensis
* Fossilized shell of the Carboniferous-modern foraminiferan Textularia Textularia
** †Textularia losangica
** †Textularia rioensis
* †Thamnasteria
** †Thamnasteria hoffmeisteri – type locality for species
* †Thamnoseris – tentative report
** †Thamnoseris morchella – type locality for species
* †Thecosmilia – tentative report
* †Thomasites
** †Thomasites adkinsi
* †Thomelites
* †Thryptodus
** †Thryptodus loomisi – type locality for species
* †Thylacus
** †Thylacus cretaceus
* †Thyracella
* †Tiarasmilia – type locality for genus
** †Tiarasmilia casteri – type locality for species
* †Tibiaporrhais – tentative report
** †Tibiaporrhais cooperensis
* †Tintorium
** †Tintorium pogodaformis – or unidentified comparable form
* †Titanosarcolites
** †Titanosarcolites oddsensis
* †Tornatellaea
** †Tornatellaea cretacea
** †Tornatellaea eretacea
** †Tornatellaea eretacea appressa
** †Tornatellaea gramdis
** †Tornatellaea scatesi
* Mounted fossilized skeleton of the Late Cretaceous horned dinosaur Torosaurus †Torosaurus
** †Torosaurus utahensis – or unidentified comparable form
* †Toucasia
** †Toucasia hancockensis
** †Toucasia texana
* †Tovula
** †Tovula microlirae
* †Trachybaculites
** †Trachybaculites columna
* Trachycardium
** †Trachycardium eufaulensis
** †Trachycardium tinninense
* †Trachyscaphites
** †Trachyscaphites densicostatus – type locality for species
** †Trachyscaphites porchi
** †Trachyscaphites spiniger
* †Trigonarca – tentative report
* †Trigonia
** †Trigonia clavigera
** †Trigonia emoryi
** †Trigonia goodellii
** †Trigonia munita
** †Trigonia proscabra
** †Trigonia stantoni
** †Trigonia vyschetzkii
* †Trilophosaurus – type locality for genus
** †Trilophosaurus buettneri – type locality for species
** †Trilophosaurus jacobsi
* Life restoration of the Late Cretaceous plesiosaur Trinacromerum †Trinacromerum – type locality for genus
** †Trinacromerum bentonianum – type locality for species
* †Trinitichelys – type locality for genus
** †Trinitichelys hiatti – type locality for species
* †Triodus
** †Triodus moorei
* †Triopticus – type locality for genus
** †Triopticus primus – type locality for species
* †Tristix
** †Tristix gigantea
** †Tristix quadrata
* Fossilized shell in multiple views of the Early-Late Cretaceous sea snail Trochactaeon †Trochactaeon
** †Trochactaeon cumminsi
* 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
** †Troostella brevispira
** †Troostella sublinearis
* Tryonia
** †Tryonia valida
* †Tundora
** †Tundora tuberculata
* Turboella
** †Turboella crebricostata
** †Turboella tallahatchiensis
* †Turgidodon
** †Turgidodon lillegraveni – or unidentified comparable form
* †Turrilites
** †Turrilites acutus
** †Turrilites saudersorum
* Fossilized shells of the Late Jurassic-modern tower snail Turritella 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 †Tyrannosaurus
** †Tyrannosaurus rex

## U

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* †Uddenia
* †Uktenadactylus
** †Uktenadactylus wadleighi – type locality for species
* †Unicardium
** †Unicardium concentricum
* Unio
* A living Upogebia mud shrimp †Upogebia
** †Upogebia rhacheochir
* †Urceolabrum
** †Urceolabrum mantachieensis – tentative report
** †Urceolabrum tuberculatum
* †Ursirivus
** †Ursirivus arlingtonanus
** †Ursirivus fannensis
** †Ursirivus fanninensis

## V

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* Z
* Vaginulina
* Valvulineria
** †Valvulineria asterigerinoides
* Life restoration of the Late Triassic reptile Vancleavea †Vancleavea
** †Vancleavea campi
* †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
** †Vascoceras cauvini – or unidentified comparable form
** †Vascoceras proprium
** †Vascoceras silvanense
* Venericardia
** †Venericardia uvaldana
* †Veniella
** †Veniella conradi
** †Veniella lineata
* †Vetericardiella
** †Vetericardiella crenalirata
** †Vetericardiella webbervillensis
* †Vicarya
* †Vinella
* Shell of a Viviparus freshwater snail Viviparus – tentative report
* Volsella
** †Volsella alveolana
** †Volsella modesta
** †Volsella tarrantana
** †Volsella uddeni
* †Volutomorpha
** †Volutomorpha aspera
** †Volutomorpha conradi
** †Volutomorpha graysonensis
** †Volutomorpha retifera
* †Voysa
** †Voysa compacta
** †Voysa constricta
** †Voysa eulessana
** †Voysa lepida
** †Voysa minor
** †Voysa planolata
** †Voysa savoiana
** †Voysa speciosa
** †Voysa varia
** †Voysa varia extensa
** †Voysa varia levicostae
** †Voysa varia nodosa
* Vulsella
** †Vulsella alveolana
** †Vulsella tarrantana

## W

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* †Wadeopsammia
** †Wadeopsammia nodosa
* Fossilized partial skulls of the Early Cretaceous crocodilian Wannchampsus †Wannchampsus – type locality for genus
** †Wannchampsus kirpachi – type locality for species
* †Wannia
** †Wannia scurriensis – type locality for species
* †Washitaster
** †Washitaster longisulcus
* †Weeksia
** †Weeksia lubbocki
* †Woodbinax
** †Woodbinax texanus
* †Woodbinesuchus – type locality for genus
** †Woodbinesuchus byersmauricei – type locality for species
* †Worthoceras
** †Worthoceras gibbosum
** †Worthoceras vermiculum – or unidentified comparable form
* †Wrightoceras
** †Wrightoceras munieri

## X

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* Xanthosia
** †Xanthosia pawpawensis
** †Xanthosia reidi
** †Xanthosia wintoni
* †Xenacanthus – report made of unidentified related form or using admittedly obsolete nomenclature
* Xenophora
* Life restoration of the Cretaceous bony fish Xiphactinus †Xiphactinus
* †Xylophagella
** †Xylophagella whitneyi

## Y

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* †Yezoites
** †Yezoites subevolutus
* Yoldia
** †Yoldia septariana
** †Yoldia subacuta