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



 * 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
 * Ostreidae - Agerostrea ungulata.JPG †[[Agerostrea]]
 * †Agerostrea mesenterica
 * †Aliofusus
 * †Aliofusus stamineus
 * Alvania clathrella 001.jpg [[Alvania]]
 * †Alvania tallahatchiensis
 * †Amaurellina
 * †Amaurellina stephensoni
 * †Ambigostrea
 * †Ambigostrea tecticosta
 * Gastropoda - Ampullina sp.JPG †[[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
 * Architectonica sp. (Marine snail).jpg [[Architectonica]]
 * †Arcoscalpellum
 * †Arcoscalpellum bakeri
 * †Arcoscalpellum campus
 * †Arcoscalpellum withersi
 * †Arctostrea
 * †Arctostrea falacata
 * Arrhoges
 * †Arrhoges plenacosta
 * †Ascaulocardium
 * †Ascaulocardium armatum
 * Astarte
 * †Astarte culebrensis
 * Ataphrus
 * †Ataphrus griffini
 * Atractosteus strausi.jpg [[Atractosteus]]
 * †Atreta
 * †Atreta melleni

B

 * Baculites grandis shell.JPG †[[Baculites]]
 * †Baculites arculus
 * †Baculites capensis
 * †Baculites grandis – or unidentified comparable form
 * †Baculites tippahensis
 * Barbatia fusca 002.jpg [[Barbatia]]
 * †Barbatia carolinensis
 * †Barbatia lintea
 * †Bathytormus
 * †Bathytormus pteropsis
 * Belemnitella mucronata.jpg †[[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
 * Harting 1852 - Bittium reticulatum1.jpg [[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

 * 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
 * Capulus ungaricus 001.jpg [[Capulus]]
 * †Capulus cuthandensis
 * †Capulus spangleri
 * Carcharias taurus.jpg [[Carcharias]] – tentative report
 * Cardium (bivalve)
 * †Cardium spillmani
 * Caryophyllia2610.jpg [[Caryophyllia]]
 * †Caryophyllia konincki – type locality for species
 * †Catopygus
 * †Catopygus mississippiensis – type locality for species
 * †Caveola
 * †Caveola acuta
 * [[File:Naturalis Biodiversity Center - RMNH.MOL.164030 - Ceratia proxima (Forbes & Hanley, 1850) - Iravadiidae - Mollusc shell.jpeg|thumb|right|Ceratia]] [[Ceratia]]
 * †Ceratia cylindrata
 * Cerithiella austrina 001.jpg [[Cerithiella]]
 * †Cerithiella – type locality for species – informal
 * †Cerithiella aequalirata
 * †Cerithiella chapelvillensis
 * †Cerithiella nodoliratum
 * †Cerithiella semirugatum
 * †Cerithioderma
 * †Cerithioderma nodosa
 * Cerithium echinatum.shell001.jpg [[Cerithium]]
 * †Cerithium binodosus
 * †Cerithium cretaceus
 * †Cerithium nodoliratum
 * †Cerithium robustus
 * †Cerithium semirugatum
 * †Cerithium weeksi
 * Chlamys
 * †Chlamys mississippensis
 * Chondrites.JPG]] †Chondrites''
 * Cidaris cidaris MHNT.jpg [[Cidaris]]
 * †Cidaris wahalakensis
 * †Clarkiella
 * †Clarkiella hemispherica
 * Clavagella
 * †Clavipholas
 * †Clavipholas pectorosa
 * Cliona
 * †Clisocolus
 * †Clisocolus concentricum
 * †Coahuilites – tentative report
 * †Colombellina
 * †Colombellina americana
 * †Colombellina cancellata
 * Corbula modesta 002.jpg [[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
 * Shark fossil.jpg †[[Cretolamna]]
 * †Cretolamna appendiculata
 * †Cristipluma – type locality for genus
 * †Cristipluma mississippiensis – type locality for species
 * Crucibulum
 * Cucullaea labiata 3.JPG [[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



 * †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
 * DiscoscaphitesirisCretaceous.jpg †[[Discoscaphites]]
 * †Discoscaphites conradi
 * †Discoscaphites iris
 * Dolicholatirus bairstowi 001.jpg †[[Dolicholatirus]]
 * †Dolicholatirus torquatus
 * †Drepanocheilus
 * †Drepanochilus
 * †Drepanochilus triliratus
 * †Drilluta
 * †Drilluta buboanus
 * †Drilluta distans
 * †Drilluta lemniscata
 * †Drilluta major

E

 * †Ecclesiogyra
 * †Ecclesiogyra heliclina
 * †Ecclesiogyra inflata
 * †Echinimathilda
 * †Echinimathilda corona
 * †Echinimathilda microstriata
 * †Echinimathilda parvula
 * Ecphora quadricostata.jpg †[[Ecphora]]
 * †Ecphora proquadricostata
 * †Ellipsoscapha
 * †Ellipsoscapha mortoni
 * Enchodus petrosus cropped.png †[[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
 * Eryma mandelslohi (Krebs) - Oberer Brauner Jura - Bissingen unter Teck.jpg †[[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
 * Eutrephoceras dekayi - Coon Creek Tennessee.jpg †[[Eutrephoceras]]
 * †Eutrephoceras dekayi
 * †Eutrephoceras perlatus
 * †Exechocirsus
 * †Exechocirsus cowickeensis
 * Exogyra costata Prairie Bluff Fm Maastrichtian.JPG †[[Exogyra]]
 * †Exogyra costata
 * †Exogyra erraticostata
 * †Exogyra ponderosa
 * †Exogyra upatoiensis

F

 * †Flemingostrea
 * †Flemingostrea subspatula
 * †Fulgerca
 * †Fulgerca attenuata – tentative report
 * †Fulgerca compressilirata
 * †Fusimilis
 * †Fusimilis kummeli
 * †Fusimilis novemcostatus
 * †Fusimilis tippanus
 * Fusinus inglorius 002.jpg Fusinus
 * †Fusinus macnairyensis

G

 * †Gegania
 * †Gegania bella
 * †Gegania bella prodiga
 * †Gegania mississippiensis
 * †Gegania parabella
 * Turridae - Gemmula rotata cropped.jpg [[Gemmula]]
 * †Gemmula cretacea
 * Bakevelliidae - Gervillia inflata.JPG †[[Gervillia]]
 * †Gervilliopsis
 * †Gervilliopsis ensiformis
 * Nurse shark.jpg [[Ginglymostoma]]
 * †Ginglymostoma globidens
 * Glossus
 * Glycymerididae - Glycymeris inflata.JPG [[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
 * GryphaeaCretaceousTexas.jpg †[[Gryphaea]]
 * †Gryphaea convexa
 * †Gryphaeostrea
 * †Gryphaeostrea vomer
 * †Gymnentome
 * †Gymnentome canalis
 * †Gymnentome unicarinata
 * Gyrineum roseum 002.jpg †[[Gyrineum]]
 * †Gyrineum gwinae
 * Gyrodes
 * †Gyrodes abyssinus
 * †Gyrodes americanus
 * †Gyrodes major
 * †Gyrodes petrosus
 * †Gyrodes spillmani
 * †Gyrodes supraplicatus
 * †Gyropleura

H

 * †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
 * Nephropidae - Hoploparia longimana cropped.jpg †[[Hoploparia]]
 * †Hoploparia tennesseensis
 * Hyala
 * †Hyala fragila
 * Hybodus NT.jpg †[[Hybodus]]
 * †Hydrotribulus
 * †Hydrotribulus elegans
 * †Hyphantoceras – tentative report
 * †Hyphantoceras amapondense
 * †Hypolophus
 * †Hypolophus mcnultyi

I

 * Inoceramus steenstrup, world's largest fossil mollusk.jpg †[[Inoceramus]]
 * †Inoceramus quadrans – or unidentified comparable form
 * †Inoperna
 * †Ischyrhiza
 * †Ischyrhiza mira

J

 * Juliacorbula
 * †Juliacorbula monmouthensis

K

 * †Kummelia

L

 * †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
 * Longnose gar.png [[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
 * Linuparus trigonus (museum).jpg [[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
 * Zelithophaga truncata.jpg [[Lithophaga]]
 * †Lomirosa
 * †Lomirosa carinata
 * †Longitubus
 * †Longoconcha
 * †Longoconcha dalli
 * †Longoconcha imbricatus
 * †Longoconcha quadrilirata
 * †Longoconcha tennesseensis
 * Bivalvia - Lopha sp.JPG [[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



 * 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
 * Micraster decipiens MHNT Coniacien Puys (76) Dos.jpg †[[Micraster]]
 * †Micraster americanus
 * Mytilidae - Modiolus species.JPG [[Modiolus (bivalve)|Modiolus]]
 * †Modiolus sedesclaris
 * †Modiolus sedesclarus
 * †Monroea
 * †Monroea coffea
 * †Morea
 * †Morea corsicanensis
 * †Morea corsicanensis depressa
 * †Morea marylandica
 * †Morea rotunda
 * †Morea transenna
 * Mosasaurus BW.jpg †[[Mosasaurus]]
 * †Myobarbum
 * †Myobarbum laevigatum
 * Myrtea
 * †Myrtea stephensoni
 * †Mytilus – tentative report

N

 * †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
 * Nerita polita (Linné, 1758) (4574792797).jpg sea snail]] Nerita''
 * †Nerita reticulirata
 * Neritina
 * †Neritina densata – tentative report
 * †Nonactaeonina
 * Nostoceras species cropped.jpg †[[Nostoceras]]
 * †Nostoceras turrilites – tentative report
 * †Notopocorystes
 * †Notopocorystes testacea
 * Nozeba
 * †Nozeba crassa
 * Nuculidae - Nucula piacentina.jpg [[Nucula]]
 * †Nucula camia
 * †Nucula cuneifrons
 * †Nucula percrassa
 * †Nucula perequalis
 * †Nucula stantoni
 * Nuculana
 * †Nuculana tarensis
 * †Nuculana whitfieldi
 * †Nudivagus
 * †Nymphalucina
 * †Nymphalucina linearia
 * †Nymphalucina parva

O

 * †Odontobasis – tentative report
 * †Odontobasis sulcata
 * †Oligoptycha
 * †Oligoptycha corrugata
 * Opaliopsis
 * †Opaliopsis angustocota
 * †Opertochasma
 * †Ornopsis
 * †Ornopsis digressa
 * †Ornopsis elevata
 * †Ornopsis modica
 * Oyster.jpg [[Ostrea]]
 * †Ostrea sloani

P



 * Pachydiscus neubergicus cropped.jpg †[[Pachydiscus]]
 * Thiaridae - Pachymelania aurita.jpg †[[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
 * Pholadomyidae - Pholadomya scutata.JPG [[Pholadomya]]
 * †Pholadomya occidentalis
 * †Piestochilus
 * †Piestochilus curviliratus
 * Pinna
 * †Pinna laqueata
 * Placenticeras meeki.jpg †[[Placenticeras]]
 * †Placenticeras placenta
 * †Placenticeras syrtale
 * †Plagiostoma
 * †Plagiostoma woodsi
 * Platecarpus tympaniticus.jpg †[[Platecarpus]] – type locality for genus
 * †Platecarpus tympaniticus – type locality for species
 * †Plectomya
 * †Plesiotriton
 * †Plesiotriton cretaceus
 * †Pleuriocardia
 * †Pleuriocardia eufaulense
 * Plicatula
 * †Plicatula mullicaensis
 * †Plicatula tetrica
 * Polinices galianor SD Pliocene 1.jpg 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
 * Pseudocorax affinis.jpg †[[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
 * Megatrigoniidae - Pterotrigonia caudata.JPG †[[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
 * Pycnodonte pulaskiensis Clayton.jpg [[Pycnodonte]]
 * †Pycnodonte belli
 * †Pycnodonte mutabilis
 * †Pycnodonte vesiculare
 * †Pycnodonte vesicularis
 * †Pyrifusus
 * †Pyrifusus sinuocostatus
 * †Pyrifusus subdensatus
 * †Pyropsis
 * †Pyropsis cornutus
 * †Pyropsis interstriatus
 * †Pyropsis perlata
 * †Pyropsis prolixa

R

 * †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
 * Ringicula doliaris.png [[Ringicula]]
 * †Ringicula clarki
 * †Ringicula pulchella
 * †Ringicula yochelsoni

S

 * †Sargana
 * †Sargana stantoni
 * †Sassia
 * †Sassia carlea
 * †Scambula
 * †Scambula perplana
 * Scapanorhynchus raphiodon cropped.jpg †[[Scapanorhynchus]]
 * †Scapanorhynchus texanus
 * SmallScaphites.jpg †[[Scaphites]]
 * †Scaphites leei
 * †Sclerorhynchus
 * †Scobinidola
 * †Scobinidola guttatus
 * Seila
 * †Seila quadrilirata
 * Serpula
 * †Solariorbis
 * †Solariorbis clara
 * †Solenoceras
 * †Solyma
 * †Solyma levis
 * Sphenodiscus - opalized.jpg shell of the Late Cretaceous ammonoid cephalopod Sphenodiscus]] †Sphenodiscus
 * †Sphenodiscus beecheri
 * †Sphenodiscus lobatus
 * †Sphenodiscus pleurisepta
 * †Spinaptychus
 * Spondylus
 * Squalicorax falcatusDB.jpg [[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



 * Teinostoma
 * †Teinostoma prenanum
 * Tellina fabula.jpg [[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
 * Cardiidae - Trachycardium multicostatum.JPG [[Trachycardium]]
 * †Trachycardium carolinensis
 * †Trachycardium eufaulensis
 * Trichotropis
 * †Trichotropis mississippiensis
 * †Trichotropis squamosa
 * Trigoniidae - Trigonia interlaevigata.JPG †[[Trigonia]]
 * Trigonostoma milleri.JPG †[[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
 * Turritellatricarinata.jpg [[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

 * †Uddenia
 * †Unicardium
 * †Unicardium concentricum
 * †Urceolabrum
 * †Urceolabrum mantachieensis
 * †Urceolabrum tuberculatum
 * †Urceolabrum tuberculatum callistum

V

 * †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

 * †Weeksia
 * †Weeksia amplificata
 * †Weeksia deplanata

X

 * XiphactinusDB cropped.png †[[Xiphactinus]]
 * †Xiphactinus audax

Z

 * †Zikkuratia
 * †Zikkuratia tabanneensis