List of the Mesozoic life of Arkansas

Last updated February 13, 2024

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

A

† Acutostrea
- † Acutostrea plumosa
† Aechmella
- † Aechmella ozanensis – type locality for species
Alderina
- † Alderina inuber – type locality for species
† Ambigostrea
- † Ambigostrea tecticosta
† Anchura
Interior and exterior of a shell of an Anomia , or jingle shell
† Anomia
- † Anomia argentaria
- † Anomia texana
† Aphrodina
- † Aphrodina tippana
† Atreta

B

† Baculites
- † Baculites crickmayi
- † Baculites ovatus
- † Baculites reduncus
- † Baculites taylorensis
- † Baculites undatus
† Bellifusus
- † Bellifusus spinosus
Botula
- † Botula conchafodentis
Fossil of the sauropod dinosaur footprint ichnogenus Brontopodus
† Brontopodus
- † Brontopodus birdi
† Buccinopsis
- † Buccinopsis solida

C

Cadulus
- † Cadulus obnutus
Caestocorbula
- † Caestocorbula crassaplica
- † Caestocorbula crassiplica
† Camptonectes
- † Camptonectes bubonis
† Cardiaster
- † Cardiaster deciper – type locality for species
A living Caryophyllia solitary coral
Caryophyllia
- † Caryophyllia konincki
† Castanopora
- † Castanopora spooneri
† Chedighaii – type locality for genus
- † Chedighaii barberi – type locality for species
† Cheethamia – type locality for genus
- † Cheethamia howei – type locality for species
† Cirroceras
- † Cirroceras conradi
† Classopollis
† Classostrobus
- † Classostrobus arkansensis
Cliona
Corbicula
- † Corbicula arkansensis
Crassatella
- † Crassatella vadosa
† Crenella
- † Crenella serica
Shell of a Cucullaea , or false ark shell
Cucullaea
- † Cucullaea capax
Cylichna
† Cymella
- † Cymella bella
† Cyprimeria
- † Cyprimeria alta
- † Cyprimeria coonensis

D

† Dentalium
- † Dentalium leve
† Desmophyllites
- † Desmophyllites diphylloides
† Dhondtichlamys
- † Dhondtichlamys venustus
† Diacanthopora
- † Diacanthopora langi – type locality for species
† Didymoceras
- † Didymoceras binodosum
- † Didymoceras clardyi
- † Didymoceras cochleatum
- † Didymoceras donezianum
- † Didymoceras draconis
- † Didymoceras mortoni
- † Didymoceras platycostatum
- † Didymoceras tortum
† Dionella
- † Dionella racemata – type locality for species
- † Dionella vivistratensis – type locality for species
Fossilized shell of the Late Cretaceous ammonoid cephalopod Discoscaphites
† Discoscaphites
- † Discoscaphites conradi
† Douvilleiceras

E

† Echinocorys
- † Echinocorys texanus
Ellisina
- † Ellisina saratogaensis – type locality for species
† Escharoides – tentative report
- † Escharoides danei – type locality for species
- † Escharoides erymnos – type locality for species
† Eutrephoceras
Interior of a fossilized shell of the Jurassic-Cretaceous foam oyster Exogyra
† Exogyra
- † Exogyra costata
- † Exogyra ponderosa

F

† Flemingostrea
- † Flemingostrea subspatula
† Frurionella
- † Frurionella parvipora

G

Fossilized shell of the Cretaceous ammonoid cephalopod Gaudryceras
† Gaudryceras
† Granocardium
- † Granocardium bowenae
- † Granocardium tholi
† Gryphaeostrea
- † Gryphaeostrea vomer

H

Hemiaster
- † Hemiaster humphreysanus
- † Hemiaster wetherbyi
† Heminautilus
- † Heminautilus stantoni – type locality for species
Fossilized shell of the Late Cretaceous ammonoid cephalopod Hoploscaphites
† Hoploscaphites
- † Hoploscaphites pumilis

I

Fossilized shell of the Early Jurassic-Late Cretaceous marine bivalve Inoceramus with a human indicating its size
† Inoceramus
† Isomicraster
- † Isomicraster danei – type locality for species

J

Fossilized shell of the Late Cretaceous ammonoid cephalopod Jeletzkytes
† Jeletzkytes
- † Jeletzkytes nodosus

L

† Lewyites
- † Lewyites oronensis
Limatula
- † Limatula acutilineata
† Linthia
- † Linthia variabilis

M

Malletia
- † Malletia longfrons
- † Malletia longifrons
† Mathilda
- † Mathilda ripleyana – or unidentified related form
† Menuites
- † Menuites portlocki – or unidentified comparable form
† Micrabacia
- † Micrabacia arkansasensis – type locality for species
Fossilized shell of the Late Cretaceous-Paleogene sea urchin Micraster
† Micraster
- † Micraster americanus
Micropora – tentative report

N

† Naomichelys
† Neancyloceras
- † Neancyloceras bipunctatum – or unidentified comparable form
Restoration of several species of the Late Cretaceous ammonoid cephalopod Nostoceras
† Nostoceras
- † Nostoceras approximans
- † Nostoceras archiacianum
- † Nostoceras arkansanum
- † Nostoceras colubriformis
- † Nostoceras helicinus
- † Nostoceras hyatti
- † Nostoceras multituberculatum
- † Nostoceras pauper
- † Nostoceras plerucostatum
- † Nostoceras pulcher
Nuculana
- † Nuculana whitfieldi

O

† Oxybeloceras
- † Oxybeloceras crassum

P

† Pachydiscus
- † Pachydiscus arkansanus
Panopea
- † Panopea subplicata
† Placenticeras
Restoration of the Late Cretaceous mosasaur Platecarpus
† Platecarpus
† Pleuriocardia
† Prionochelys – type locality for genus
- † Prionochelys nauta – type locality for species
† Protocardia
- † Protocardia spillmani
† Pseudofrenelopsis
- † Pseudofrenelopsis parceramosa
† Pseudokossmaticeras
- † Pseudokossmaticeras galicianum
† Pseudophyllites
† Pseudosaynella
- † Pseudosaynella fimbriata – type locality for species
- † Pseudosaynella walcotti
† Pteria
† Pterotrigonia
- † Pterotrigonia thoracica
Pulvinites
- † Pulvinites argenteus
Pycnodonte
- † Pycnodonte vesiculare
- † Pycnodonte vesicularis
† Pyropsis

R

Ramphonotus
- † Ramphonotus pedunculatus – type locality for species

S

Serpula
† Solenoceras
- † Solenoceras texanum – or unidentified comparable form
† Solenophragma
- † Solenophragma elongatum – type locality for species
- † Solenophragma ovatum
† Sphenodiscus
Shell of a Spondylus , or spiny oyster
Spondylus
† Stictostega – type locality for genus
- † Stictostega durhami – type locality for species
Striarca
† Striaticostatum
† Stylina
- † Stylina arkansasensis – type locality for species
† Syncyclonema
- † Syncyclonema simplicius
- † Syncyclonema travisanus

T

† Tenea
- † Tenea parilis
† Thamnasteria
- † Thamnasteria imlayi – type locality for species
Mounted fossilized skeleton of the Late Cretaceous sea turtle Toxochelys
† Toxochelys – type locality for genus
- † Toxochelys latiremis – type locality for species
Trachycardium
† Trachyscaphites
- † Trachyscaphites redbirdensis
† Tricephalopora
- † Tricephalopora arkansasensis – type locality for species
- † Tricephalopora larwoodi – type locality for species
Turritella
- † Turritella bilira
- † Turritella trilira

U

† Uhligella – tentative report

V

† Veniella
- † Veniella conradi

Z

Zangerlchelys
- † Zangerlchelys arkansaw – type locality for species

References

Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database" . Retrieved 17 December 2021.

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List of the Mesozoic life of Arkansas

Contents

A

B

C

D

E

F

G

H

I

J

L

M

N

O

P

R

S

T

U

V

Z

References