List of the prehistoric life of Arkansas

This list of the prehistoric life of Arkansas contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Arkansas.

The Paleobiology Database records no known occurrences of Precambrian fossils in Alabama.

Fossils of the Carboniferous-Permian bryozoan Archimedes
Fossil of the Late Ordovician-Middle Devonian trilobite Dalmanites
Fossilized calyx of the Silurian-Middle Devonian crinoid ("sea lily") Eucalyptocrinites
Fossilized shell of the Carboniferous-Permian nautiloid cephalopod Metacoceras
Fossil of the Middle Ordovician-Silurian trilobite Sphaerexochus
Fossil of the sauropod dinosaur footprint ichnogenus Brontopodus
Shell of a Cucullaea , or false ark shell
Interior of a fossilized shell of the Jurassic-Cretaceous foam oyster Exogyra
Restoration of the Late Cretaceous mosasaur Platecarpus
Mounted fossilized skeleton of the Late Cretaceous sea turtle Toxochelys
Life restoration of the Eocene whale Basilosaurus
Illustration of a fossilized cranium of the Pleistocene Canis armbrusteri , or Armbruster's wolf
A living Coluber constrictor , or eastern racer
Restoration of the Pliocene-Holocene horse Equus scotti , or Scott's horse
A living Iridomyrmex , or rainbow ant
Mounted fossilized skeleton of a Mammuthus columbi or Columbian mammoth
Fossilized skeleton of the Pliocene-Holocene peccary Mylohyus
A living Panthera onca , or jaguar
A living Pristis sawfish
Life restoration of the Pleistocene-Holocene saber-tooth cat Smilodon
Shell of a Spisula , or surf clam
A living Urocyon cinereoargenteus , or gray fox