# List of the Mesozoic life of Mississippi

This list of the Mesozoic life of Mississippi contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Mississippi and are between 252.17 and 66 million years of age.

## A

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* Acesta
** †Acesta riddlei
* †Aciculiscala
** †Aciculiscala acuta
** †Aciculiscala coffea
* Acirsa
** †Acirsa clathrata
** †Acirsa culmosa
** †Acirsa flexicostata
** †Acirsa gravida
** †Acirsa implexa
** †Acirsa microstriata – or unidentified comparable form
** †Acirsa wadei
* Acmaea
* †Acrocoelum – tentative report
** †Acrocoelum cereum
* †Acteon
** †Acteon cicatricosus
** †Acteon pistilliformis
* †Acutostrea
** †Acutostrea plumosa
* †Aenona
** †Aenona eufaulensis
* Fossilized shell of the Late Cretaceous oyster Agerostrea †Agerostrea
** †Agerostrea mesenterica
* †Aliofusus
** †Aliofusus stamineus
* Shells in multiple views of Alvania sea snails Alvania
** †Alvania tallahatchiensis
* †Amaurellina
** †Amaurellina stephensoni
* †Ambigostrea
** †Ambigostrea tecticosta
* Fossilized shell of the Jurassic-Miocene sea snail Ampullina †Ampullina
** †Ampullina lepta
** †Ampullina potens
* Amuletum
** †Amuletum costata
** †Amuletum costatum – tentative report
** †Amuletum dumasensis
** †Amuletum fasciolatum
** †Amuletum limbatum
** †Amuletum macnairyensis
** †Amuletum macnairyensis torquatum
** †Amuletum wadei
* †Anatimya
** †Anatimya anteradiata
** †Anatimya postsulcata
* Anatina
** †Anatina jerseyensis – or unidentified comparable form
* †Anchura
** †Anchura abrupta
** †Anchura chapelvillensis
** †Anchura coffea
** †Anchura corniculata
** †Anchura noakensis – tentative report
** †Anchura substriata
* †Ancilla
** †Ancilla acutula
* †Anisomyon
* †Anomalofusus
** †Anomalofusus lemniscatus
** †Anomalofusus subnodosus
* †Anomia
** †Anomia argentaria
** †Anomia ornata
** †Anomia tellinoides
* †Anomoeodus
** †Anomoeodus latidens – type locality for species
** †Anomoeodus mississippiensis – type locality for species
** †Anomoeodus phaseolus
* Anteglosia
** †Anteglosia tennesseensis
* †Anteglossia
* †Antillocaprina
* †Aphrodina
** †Aphrodina eufaulensis – tentative report
** †Aphrodina regia
** †Aphrodina tippana
* †Arca
** †Arca rostellata
* A living Architectonica staircase shell sea snail Architectonica
* †Arcoscalpellum
** †Arcoscalpellum bakeri
** †Arcoscalpellum campus
** †Arcoscalpellum withersi
* †Arctostrea
** †Arctostrea falacata
* Arrhoges
** †Arrhoges plenacosta
* †Ascaulocardium
** †Ascaulocardium armatum
* Astarte
** †Astarte culebrensis
* Ataphrus
** †Ataphrus griffini
* Fossilized skeleton of the gar Atractosteus Atractosteus
* †Atreta
** †Atreta melleni

## B

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* Fossilized shell of the Late Cretaceous ammonoid cephalopod Baculites †Baculites
** †Baculites arculus
** †Baculites capensis
** †Baculites grandis – or unidentified comparable form
** †Baculites tippahensis
* Shell of a Barbatia, or bearded ark clam Barbatia
** †Barbatia carolinensis
** †Barbatia lintea
* †Bathytormus
** †Bathytormus pteropsis
* Fossilized guard of the Late Cretaceous belemnoid cephalopod Belemnitella †Belemnitella
** †Belemnitella americana
* †Bellifusus
** †Bellifusus angulicostatus
** †Bellifusus curvicostatus
** †Bellifusus curvicostatus crenulatus
** †Bellifusus spinosus
* †Belliscala
** †Belliscala lirata
** †Belliscala nodosa
** †Belliscala rockensis
* †Beretra
** †Beretra gracilis
** †Beretra preclara
** †Beretra ripleyana
* Bernaya
** †Bernaya mississippiensis
* Illustration of the shell in multiple views of a Bittium cerith sea snail Bittium – tentative report
* †Bizarrus
** †Bizarrus abnormalis
* †Boehmoceras
** †Boehmoceras arculus
* Botula
** †Botula carolinensis
** †Botula ripleyana
* Brachidontes
* †Brachylepas
** †Brachylepas angulosa
* †Breviarca
** †Breviarca umbonata
* †Buccinopsis
** †Buccinopsis crassicostata
** †Buccinopsis crassus
** †Buccinopsis dorothiella
** †Buccinopsis solida
* Bulla – tentative report
* †Bullopsis
** †Bullopsis cretacea
** †Bullopsis demersus

## C

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* Cadulus
** †Cadulus obnutus
* Caestocorbula
** †Caestocorbula crassaplica
** †Caestocorbula crassiplica
** †Caestocorbula suffalciata
** †Caestocorbula terramaria
* †Calliomphalus
** †Calliomphalus americanus
** †Calliomphalus argenteus
** †Calliomphalus conanti
** †Calliomphalus microcancelli
** †Calliomphalus nudus
** †Calliomphalus paucispirilus
** †Calliomphalus tuberculosus
* Calyptraea
* †Camptonectes
** †Camptonectes bellisculptus
** †Camptonectes berryi
** †Camptonectes bubonis
** †Camptonectes burlingtonensis
* Cantharus
** †Cantharus lemniscatus
* Shells of modern Capulus cap sea snails Capulus
** †Capulus cuthandensis
** †Capulus spangleri
* A living Carcharias sand tiger shark Carcharias – tentative report
* Cardium [fr; nl; sv]
** †Cardium spillmani
* A living Caryophyllia solitary coral Caryophyllia
** †Caryophyllia konincki – type locality for species
* †Catopygus
** †Catopygus mississippiensis – type locality for species
* †Caveola
** †Caveola acuta
* Ceratia Ceratia
** †Ceratia cylindrata
* Illustration of a shell of a Cerithiella cerith sea snail Cerithiella
** †Cerithiella – type locality for species – informal
** †Cerithiella aequalirata
** †Cerithiella chapelvillensis
** †Cerithiella nodoliratum
** †Cerithiella semirugatum
* †Cerithioderma
** †Cerithioderma nodosa
* Two views of a Cerithium cerith sea snail Cerithium
** †Cerithium binodosus
** †Cerithium cretaceus
** †Cerithium nodoliratum
** †Cerithium robustus
** †Cerithium semirugatum
** †Cerithium weeksi
* Chlamys
** †Chlamys mississippensis
* Illustration of a fossil of the Cambrian-modern burrow ichnogenus Chondrites †Chondrites
* Shell and spines of a Cidaris sea urchin Cidaris
** †Cidaris wahalakensis
* †Clarkiella
** †Clarkiella hemispherica
* Clavagella
* †Clavipholas
** †Clavipholas pectorosa
* Cliona
* †Clisocolus
** †Clisocolus concentricum
* †Coahuilites – tentative report
* †Colombellina
** †Colombellina americana
** †Colombellina cancellata
* Shell of a Corbula basket clam Corbula
** †Corbula torta
* †Costellacesta
** †Costellacesta riddlei
* Crassatella
** †Crassatella hodgei
** †Crassatella neusensis
** †Crassatella roodensis
** †Crassatella vadosa
* Crenella
** †Crenella elegantula
** †Crenella serica
* †Creonella
** †Creonella subangulata
** †Creonella triplicata
** †Creonella turretiforma
* †Cretiscalpellum
** †Cretiscalpellum hardnedi
** †Cretiscalpellum vallum
* Fossil of the Early Cretaceous-Eocene shark Cretolamna †Cretolamna
** †Cretolamna appendiculata
* †Cristipluma – type locality for genus
** †Cristipluma mississippiensis – type locality for species
* Crucibulum
* Shell of a Cucullaea, or false ark shell Cucullaea
** †Cucullaea capax
** †Cucullaea carolinensis
** †Cucullaea littlei
** †Cucullaea vulgans
** †Cucullaea wadei – tentative report
* †Cuna
** †Cuna texana
* Cuspidaria
** †Cuspidaria grandis
** †Cuspidaria jerseyensis – or unidentified comparable form
* †Cyclorisma
** †Cyclorisma parva
* Cylichna
** †Cylichna diversilirata
** †Cylichna incisa
** †Cylichna intermissia
** †Cylichna secalina
* †Cylindrotruncatum
** †Cylindrotruncatum demersum
* †Cymbophora
** †Cymbophora appressa
** †Cymbophora berryi
** †Cymbophora lintea
* †Cymella
** †Cymella bella
** †Cymella ironensis – tentative report
* †Cyprimeria
** †Cyprimeria alta
** †Cyprimeria depressa

## D

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* †Dakoticancer
** †Dakoticancer australis
* †Damesia
** †Damesia keownvillensis
* Dasmosmilia
** †Dasmosmilia kochii
* †Dentalium
** †Dentalium leve
* †Deussenia
** †Deussenia bellalirata
** †Deussenia ripleyana
** †Deussenia travisana – or unidentified comparable form
* †Dhondtichlamys
** †Dhondtichlamys venustus
* †Dictyaraea
* Dimya
** †Dimya melleni
* †Diplomoceras
** †Diplomoceras trabeatus
* †Dircella
** †Dircella spillmani
* Fossilized shell of the Late Cretaceous ammonoid cephalopod Discoscaphites †Discoscaphites
** †Discoscaphites conradi
** †Discoscaphites iris
* Shell of a Dolicholatirus sea snail †Dolicholatirus
** †Dolicholatirus torquatus
* †Drepanocheilus
* †Drepanochilus
** †Drepanochilus triliratus
* †Drilluta
** †Drilluta buboanus
** †Drilluta distans
** †Drilluta lemniscata
** †Drilluta major

## E

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* †Ecclesiogyra
** †Ecclesiogyra heliclina
** †Ecclesiogyra inflata
* †Echinimathilda
** †Echinimathilda corona
** †Echinimathilda microstriata
** †Echinimathilda parvula
* Illustration of a fossilized shell of the Eocene-Pliocene murex sea snail Ecphora †Ecphora
** †Ecphora proquadricostata
* †Ellipsoscapha
** †Ellipsoscapha mortoni
* Restoration of the Early Cretaceous-Eocene bony fish Enchodus, or the "saber-toothed herring" †Enchodus
** †Enchodus petrosus
* †Endoptygma
** †Endoptygma leprosa
* †Entomope
** †Entomope ponderi
* †Eoacteon
** †Eoacteon ithyocheilus
** †Eoacteon linteus
* †Eoharpa
** †Eoharpa sinuosa
* Eonavicula
** †Eonavicula rostellata
* †Eothoracosaurus – type locality for genus
** †Eothoracosaurus mississippiensis – type locality for species
* †Epitonium
** †Epitonium faearium
** †Epitonium sillimani
* Fossil of the crustacean Eryma †Eryma – report made of unidentified related form or using admittedly obsolete nomenclature
** †Eryma flecta
* †Etea
** †Etea carolinensis
* †Eubaculites
** †Eubaculites carinatus
* †Eufistulana
** †Eufistulana ripleyana
* †Eufistulina
** †Eufistulina ripleyana
* †Eulima
** †Eulima clara
** †Eulima coffea
** †Eulima gracilistylis
** †Eulima laevigata
** †Eulima monmouthensis
** †Eulima spirala
* †Euspira
** †Euspira rectilabrum
* Illustration in multiple views of a fossilized shell of the Late Jurassic-Miocene nautiloid cephalopod Eutrephoceras †Eutrephoceras
** †Eutrephoceras dekayi
** †Eutrephoceras perlatus
* †Exechocirsus
** †Exechocirsus cowickeensis
* Fossilized shell of the Jurassic-Cretaceous foam oyster Exogyra †Exogyra
** †Exogyra costata
** †Exogyra erraticostata
** †Exogyra ponderosa
** †Exogyra upatoiensis

## F

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* †Flemingostrea
** †Flemingostrea subspatula
* †Fulgerca
** †Fulgerca attenuata – tentative report
** †Fulgerca compressilirata
* †Fusimilis
** †Fusimilis kummeli
** †Fusimilis novemcostatus
** †Fusimilis tippanus
* shell of Fusinus inglorius Fusinus
** †Fusinus macnairyensis

## G

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* †Gegania
** †Gegania bella
** †Gegania bella prodiga
** †Gegania mississippiensis
** †Gegania parabella
* Fossilized shell of a Gemmula sea snail, or gem turrid Gemmula
** †Gemmula cretacea
* Fossilized shell of the Carboniferous-Eocene bivalve Gervillia †Gervillia
* †Gervilliopsis
** †Gervilliopsis ensiformis
* A living Ginglymostoma nurse shark Ginglymostoma
** †Ginglymostoma globidens
* Glossus
* Fossilized shell of a Glycymeris, or bittersweet clam Glycymeris
** †Glycymeris microsulci
** †Glycymeris rotundata
** †Glycymeris whiteleyensis
* †Glyptoxoceras
* †Goniocylichna
** †Goniocylichna bisculpturata
** †Goniocylichna elongata
* †Graciliala
** †Graciliala calcaris
** †Graciliala decemlirata
** †Graciliala johnsoni
* †Granocardium
** †Granocardium dumosum
** †Granocardium kuemmeli
** †Granocardium kummeli
** †Granocardium lowei
** †Granocardium tippananum
** †Granocardium tippanum
* †Granosolarium
** †Granosolarium coffea
* †Graphidula
** †Graphidula melanopsis
** †Graphidula multicostata
** †Graphidula terebriformis
* Interior and exterior of a fossilized shell of the Late Triassic-Eocene marine bivalve Gryphaea †Gryphaea
** †Gryphaea convexa
* †Gryphaeostrea
** †Gryphaeostrea vomer
* †Gymnentome
** †Gymnentome canalis
** †Gymnentome unicarinata
* Gyrineum †Gyrineum
** †Gyrineum gwinae
* Gyrodes
** †Gyrodes abyssinus
** †Gyrodes americanus
** †Gyrodes major
** †Gyrodes petrosus
** †Gyrodes spillmani
** †Gyrodes supraplicatus
* †Gyropleura

## H

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* †Hadrosaurus – tentative report
* †Hamites
* †Hamulus
** †Hamulus onyx
** †Hamulus ripleyanus
** †Hamulus squamosus
* †Harduinia
** †Harduinia aequorea
** †Harduinia dalli
** †Harduinia mortoni
** †Harduinia mortonis
** †Harduinia weatherbyi
* †Heliacus
** †Heliacus reticulatus
* †Helicaulax
** †Helicaulax formosa
* †Helicoceras
* Hemiaster
** †Hemiaster humphreysanus
** †Hemiaster wetherbyi
* Hemiscyllium
* †Hercorhynchus
** †Hercorhynchus quadriliratus
* †Hercorhyncus
** †Hercorhyncus bicarinatus
** †Hercorhyncus pagodaformis
** †Hercorhyncus tippanus
** †Hercorhyncus triliratus
* Fossil of the Jurassic-Paleogene lobster Hoploparia †Hoploparia
** †Hoploparia tennesseensis
* Hyala
** †Hyala fragila
* Restoration of two of the Permian-Late Cretaceous cartilaginous fish Hybodus †Hybodus
* †Hydrotribulus
** †Hydrotribulus elegans
* †Hyphantoceras – tentative report
** †Hyphantoceras amapondense
* †Hypolophus
** †Hypolophus mcnultyi

## I

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* Fossilized shell of the Early Jurassic-Late Cretaceous marine bivalve Inoceramus with a human indicating its size †Inoceramus
** †Inoceramus quadrans – or unidentified comparable form
* †Inoperna
* †Ischyrhiza
** †Ischyrhiza mira

## J

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* Juliacorbula
** †Juliacorbula monmouthensis

## K

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* †Kummelia

## L

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* †Lacrimiforma
** †Lacrimiforma secunda
* Laternula
** †Laternula robusta
* †Latiala
** †Latiala lobata
* †Latiata – tentative report
* †Laxispira
** †Laxispira lumbricalis
** †Laxispira monilifera
* †Lefortia
** †Lefortia trojana – type locality for species
* †Legumen
** †Legumen ellipticum
* †Lemniscolittorina
** †Lemniscolittorina berryi
** †Lemniscolittorina yonkersi
* Illustration of a living Lepisosteus, or gar Lepisosteus
* †Leptosolen
** †Leptosolen biplicata
* Lima
** †Lima deatsvillensis
** †Lima pelagica
* Limatula
** †Limatula acutilineata
* Limopsis
** †Limopsis meeki
** †Limopsis perbrevis
* †Linearis
** †Linearis magnoliensis
** †Linearis metastriata
** †Linearis pectinis
* †Linthia
** †Linthia variabilis
* A modern Linuparus spiny lobster Linuparus
** †Linuparus canadensis
* †Liopeplum
** †Liopeplum canalis
** †Liopeplum cretaceum
** †Liopeplum leioderma
** †Liopeplum nodosum
** †Liopeplum rugosum
** †Liopeplum spiculatum
* †Liopistha
** †Liopistha protexta
* †Liothyris
** †Liothyris carolinensis
* †Lispodesthes
** †Lispodesthes amplus
* Shell of a Lithophaga, or date mussel Lithophaga
* †Lomirosa
** †Lomirosa carinata
* †Longitubus
* †Longoconcha
** †Longoconcha dalli
** †Longoconcha imbricatus
** †Longoconcha quadrilirata
** †Longoconcha tennesseensis
* Fossilized shell of the Triassic-modern marine bivalve Lopha Lopha
** †Lopha falcata
** †Lopha mesenterica
* †Lowenstamia
** †Lowenstamia cucullata
** †Lowenstamia funiculus
** †Lowenstamia liratus
** †Lowenstamia subplanus – or unidentified comparable form
* †Lucina – tentative report
* †Lupira
** †Lupira disparila
** †Lupira pyriformis
** †Lupira turbinea
* †Lycettia
** †Lycettia tippana
** †Lycettia tippanus
* †Lyriochlamys
** †Lyriochlamys cretosa
** †Lyriochlamys cretosus

## M

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* Malletia
** †Malletia longfrons
** †Malletia longifrons
** †Malletia stephensoni
* †Margaritella
** †Margaritella pumila
* †Mataxa
** †Mataxa elegans
** †Mataxa leioderma
* †Mathilda
** †Mathilda cedarensis
** †Mathilda corona
** †Mathilda hexalira
** †Mathilda pentalira
** †Mathilda ripleyana
** †Mathilda unionensis
* †Menabites
** †Menabites danei
** †Menabites delawarensis
* Meretrix – tentative report
* †Mesodendriurn
** †Mesodendriurn oktibbehaensis
* †Micrabacia
** †Micrabacia marylandica – type locality for species
** †Micrabacia radiata – type locality for species
* Fossil of the Late Cretaceous-Eocene sea urchin Micraster †Micraster
** †Micraster americanus
* Fossilized shell of the Devonian-modern marine bivalve Modiolus, or horsemussel Modiolus
** †Modiolus sedesclaris
** †Modiolus sedesclarus
* †Monroea
** †Monroea coffea
* †Morea
** †Morea corsicanensis
** †Morea corsicanensis depressa
** †Morea marylandica
** †Morea rotunda
** †Morea transenna
* Life restoration of two of the Late Cretaceous Mosasaurus †Mosasaurus
* †Myobarbum
** †Myobarbum laevigatum
* Myrtea
** †Myrtea stephensoni
* †Mytilus – tentative report

## N

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* †Napulus
** †Napulus fragilis
** †Napulus octoliratus
* †Neamphitomaria
** †Neamphitomaria planospira
** †Neamphitomaria reticulata
** †Neamphitomaria stantoni
* †Neithea
** †Neithea bexarensis
* †Nemoarca
* †Nemocardium
** †Nemocardium fragile
* †Nemodon
** †Nemodon brevifrons
** †Nemodon eufalensis
** †Nemodon eufaulensis
** †Nemodon grandis – or unidentified comparable form
** †Nemodon neusensis
* Shell in multiple views of a Nerita polita sea snail Nerita
** †Nerita reticulirata
* Neritina
** †Neritina densata – tentative report
* †Nonactaeonina
* Restoration of several species of the Late Cretaceous ammonoid cephalopod Nostoceras †Nostoceras
** †Nostoceras turrilites – tentative report
* †Notopocorystes
** †Notopocorystes testacea
* Nozeba
** †Nozeba crassa
* Interior of a fossilized shell of the Early Ordovician-modern marine bivalve Nucula Nucula
** †Nucula camia
** †Nucula cuneifrons
** †Nucula percrassa
** †Nucula perequalis
** †Nucula stantoni
* Nuculana
** †Nuculana tarensis
** †Nuculana whitfieldi
* †Nudivagus
* †Nymphalucina
** †Nymphalucina linearia
** †Nymphalucina parva

## O

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
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* L
* M
* N
* O
* P
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* W
* X
* Y
* Z
* †Odontobasis – tentative report
** †Odontobasis sulcata
* †Oligoptycha
** †Oligoptycha corrugata
* Opaliopsis
** †Opaliopsis angustocota
* †Opertochasma
* †Ornopsis
** †Ornopsis digressa
** †Ornopsis elevata
** †Ornopsis modica
* Shell of an Ostrea, or oyster Ostrea
** †Ostrea sloani

## P

* A
* B
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* D
* E
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* X
* Y
* Z
* Fossilized shell of the Late Cretaceous ammonoid cephalopod Pachydiscus †Pachydiscus
* Shell of a Pachymelania freshwater snail †Pachymelania – tentative report
* †Paladmete
** †Paladmete cancellaria
** †Paladmete gardnerae
** †Paladmete gardnerae pygmaea
** †Paladmete laevis
* †Palaeoxantho – type locality for genus
** †Palaeoxantho libertiensis – type locality for species
* †Paleofusimitra
** †Paleofusimitra elongata
* †Paleopsephaea
** †Paleopsephaea mutabilis
** †Paleopsephaea tenuilirata
* Panopea
** †Panopea monmouthensis
* †Parafusus
** †Parafusus callilateris
** †Parafusus coloratus
** †Parafusus saffordi
* †Paranomia
** †Paranomia scabra
* †Parapaguristes
** †Parapaguristes tuberculatus – type locality for species
** †Parapaguristes whitteni – type locality for species
* †Parmicorbula
** †Parmicorbula suffalciata
** †Parmicorbula terramaria
** †Parmicorbula torta
* †Pauciacirsa
** †Pauciacirsa simplex
* Pecten
** †Pecten venustus
* †Periplomya
** †Periplomya applicata
* †Perissoptera
** †Perissoptera prolabiata mississippiensis
* †Perrisonota
** †Perrisonota protexta
* Phacoides
** †Phacoides mattiformis – tentative report
* †Phelopteria
** †Phelopteria linguaeformis
** †Phelopteria linguiformis
* Fossilized shell of the Early Triassic-Pliocene marine bivalve Pholadomya Pholadomya
** †Pholadomya occidentalis
* †Piestochilus
** †Piestochilus curviliratus
* Pinna
** †Pinna laqueata
* Fossilized shell of the Late Cretaceous ammonoid cephalopod Placenticeras †Placenticeras
** †Placenticeras placenta
** †Placenticeras syrtale
* †Plagiostoma
** †Plagiostoma woodsi
* Restoration of the Late Cretaceous mosasaur Platecarpus †Platecarpus – type locality for genus
** †Platecarpus tympaniticus – type locality for species
* †Plectomya
* †Plesiotriton
** †Plesiotriton cretaceus
* †Pleuriocardia
** †Pleuriocardia eufaulense
* Plicatula
** †Plicatula mullicaensis
** †Plicatula tetrica
* Fossilized shell of the Paleocene-modern moon snail Polinices Polinices
** †Polinices kummeli
* †Postligata
** †Postligata wordeni
* †Praeleda
** †Praeleda compar
* †Prehepatus
** †Prehepatus harrisi
* †Promathildia
** †Promathildia parvula
* †Protobusycon
** †Protobusycon binodosum
* †Protocallianassa
** †Protocallianassa mortoni
* †Protocardia
** †Protocardia spillmani
** †Protocardia stantoni
* †Pseudoclaviscala
** †Pseudoclaviscala laevicosta
** †Pseudoclaviscala rugacosta
* Fossilized teeth of the Cretaceous shark Pseudocorax †Pseudocorax
** †Pseudocorax granti
* †Pseudolimea
** †Pseudolimea reticulata
** †Pseudolimea sellardsi
* Pseudomalaxis
** †Pseudomalaxis pateriformis
** †Pseudomalaxis pilsbryi
** †Pseudomalaxis stantoni
* †Pseudoptera
* †Pseudoschloenbachia
** †Pseudoschloenbachia mexicana
* †Pteria
** †Pteria rhombica
* †Pterocerella
** †Pterocerella maryea
** †Pterocerella poinsettiformis
** †Pterocerella pontotocensis
** †Pterocerella tippana
* Fossilized shell of the Jurassic-Cretaceous marine bivalve Pterotrigonia †Pterotrigonia
** †Pterotrigonia angulicostata
** †Pterotrigonia bartrami
** †Pterotrigonia eufalensis
** †Pterotrigonia eufaulensis
** †Pterotrigonia thoracia
** †Pterotrigonia thoracica
* †Ptychodus
** †Ptychodus mortoni
* †Ptychosyca
** †Ptychosyca inornata
* †Ptychotrygon
** †Ptychotrygon vermiculata
* †Pugnellus
** †Pugnellus densatus
** †Pugnellus goldmani
* Pulvinites
** †Pulvinites argenteus
* Punctiscala
** †Punctiscala melaniea
* Assemblage of fossilized shells of the Cretaceous-Pleistocene oyster Pycnodonte Pycnodonte
** †Pycnodonte belli
** †Pycnodonte mutabilis
** †Pycnodonte vesiculare
** †Pycnodonte vesicularis
* †Pyrifusus
** †Pyrifusus sinuocostatus
** †Pyrifusus subdensatus
* †Pyropsis
** †Pyropsis cornutus
** †Pyropsis interstriatus
** †Pyropsis perlata
** †Pyropsis prolixa

## R

* 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
* †Rachiosoma
** †Rachiosoma mortoni
* †Radiopecten
** †Radiopecten mississippiensis
* †Raninella
** †Raninella tridens
* †Reginaites
** †Reginaites exilis – type locality for species
** †Reginaites leei
* †Remera
** †Remera flexicostata
** †Remera microstriata
** †Remera stephensoni
* †Remnita
** †Remnita anomalocostata
* †Rhombopsis
** †Rhombopsis molinoensis
* A living Ringicula sea snail Ringicula
** †Ringicula clarki
** †Ringicula pulchella
** †Ringicula yochelsoni

## S

* A
* B
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* D
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* F
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* H
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* M
* N
* O
* P
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* R
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* T
* U
* V
* W
* X
* Y
* Z
* †Sargana
** †Sargana stantoni
* †Sassia
** †Sassia carlea
* †Scambula
** †Scambula perplana
* Restoration of several of the Early Cretaceous-Miocene shark Scapanorhynchus †Scapanorhynchus
** †Scapanorhynchus texanus
* Fossilized shell of the Late Cretaceous ammonoid cephalopod Scaphites †Scaphites
** †Scaphites leei
* †Sclerorhynchus
* †Scobinidola
** †Scobinidola guttatus
* Seila
** †Seila quadrilirata
* Serpula
* †Solariorbis
** †Solariorbis clara
* †Solenoceras
* †Solyma
** †Solyma levis
* Opalized shell of the Late Cretaceous ammonoid cephalopod Sphenodiscus †Sphenodiscus
** †Sphenodiscus beecheri
** †Sphenodiscus lobatus
** †Sphenodiscus pleurisepta
* †Spinaptychus
* Spondylus
* Life restoration of the Late Cretaceous shark Squalicorax Squalicorax
** †Squalicorax kaupi
* †Stantonella
** †Stantonella interrupta
** †Stantonella ripleyana
* †Stephanophyllia
** †Stephanophyllia cribraria
* Stosicia
** †Stosicia antiqua
* †Streptacis – tentative report
** †Streptacis bogradi
* Striarca
** †Striarca prebrevis
** †Striarca richardsi
** †Striarca saffordi
** †Striarca umbonata
* †Striaticostatum
** †Striaticostatum asperum
** †Striaticostatum bexarense
** †Striaticostatum congestum
** †Striaticostatum griffini
** †Striaticostatum harbisoni
** †Striaticostatum micropunctatum
** †Striaticostatum sparsum
* Sulcoretusa
** †Sulcoretusa spinosa
* †Syncyclonema
** †Syncyclonema simplicius

## T

* A
* B
* C
* D
* E
* F
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* H
* I
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* M
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* Teinostoma
** †Teinostoma prenanum
* Shell of a Tellina, or tellin Tellina
* †Tellinimera
** †Tellinimera buboana
** †Tellinimera gabbi
* †Tenea
** †Tenea parilis
* †Tenuipteria
** †Tenuipteria argentea
** †Tenuipteria argenteus
* †Tetracarcinus
** †Tetracarcinus subquadratus
* †Texanites
** †Texanites gallicus
* Thracia
* †Thylacus
** †Thylacus cretaceus
* †Titanosarcolites
* †Tornatellaea
** †Tornatellaea cretacea
* †Tornus – tentative report
** †Tornus planocarinatus
* †Trachybaculites
** †Trachybaculites columna
* Fossilized shell of a Trachycardium cockle Trachycardium
** †Trachycardium carolinensis
** †Trachycardium eufaulensis
* Trichotropis
** †Trichotropis mississippiensis
** †Trichotropis squamosa
* Fossilized shell of the Permian-Paleocene marine bivalve Trigonia †Trigonia
* Shell of a Trigonostoma nutmeg sea snail †Trigonostoma
** †Trigonostoma ripleyana
* †Trobus
** †Trobus buboanus
** †Trobus corona
* Trochocyathus
** †Trochocyathus speciosus – type locality for species
* †Tundora
** †Tundora tuberculata
* †Turbinopsis
** †Turbinopsis curta – or unidentified comparable form
* Turboella
** †Turboella crebricostata
* †Turrilites
** †Turrilites peruviana – or unidentified comparable form
* Fossilized shells of the Late Jurassic-modern tower snail Turritella Turritella
** †Turritella bilira
** †Turritella chalybeatensis
** †Turritella chapelvillensis
** †Turritella hilgardi
** †Turritella howelli
** †Turritella paravertebroides
** †Turritella quadrilira
** †Turritella tippana
** †Turritella trilira
** †Turritella vertebroides
* †Tympanotonus
** †Tympanotonus trilirus

## U

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
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* †Uddenia
* †Unicardium
** †Unicardium concentricum
* †Urceolabrum
** †Urceolabrum mantachieensis
** †Urceolabrum tuberculatum
** †Urceolabrum tuberculatum callistum

## V

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
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* R
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* T
* U
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* X
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* Z
* †Variseila
** †Variseila meeki
* †Veniella
** †Veniella conradi
* †Vetericardiella
** †Vetericardiella crenalirata
** †Vetericardiella webbervillensis
* †Volutomorpha
** †Volutomorpha aspera
** †Volutomorpha dumasensis
** †Volutomorpha producta
** †Volutomorpha retifera
** †Volutomorpha splendida
** †Volutomorpha valida

## W

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
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* L
* M
* N
* O
* P
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* W
* X
* Y
* Z
* †Weeksia
** †Weeksia amplificata
** †Weeksia deplanata

## X

* A
* B
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* D
* E
* F
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* H
* I
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* L
* M
* N
* O
* P
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* X
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* Life restoration of the Cretaceous bony fish Xiphactinus †Xiphactinus
** †Xiphactinus audax

## Z

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* H
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* M
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* X
* Y
* Z
* †Zikkuratia
** †Zikkuratia tabanneensis