List of the prehistoric life of Oklahoma

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

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

Restoration of the Permian amphibian Acheloma
Fossil of the Carboniferous horsetail relative Annularia
Mold fossil of a shell of the Early Devonian-Late Triassic bivalve Aviculopecten
Life restoration of the Permian amphibian Cacops
Fossilized skeletons of the Permian reptile Captorhinus
Fossil of the Cambrian-Middle Devonian trilobite Cheirurus
Mounted fossilized skeleton of the Permian synapsid (mammal precursor) Cotylorhynchus
Fossilized foliage from the Carboniferous seed fern Cyclopteris
Life restoration of the Permian synapsid (mammal precursor) Dimetrodon
Life restoration of the Carboniferous-Permian synapsid (mammal precursor) Edaphosaurus
Fossil of the Middle Ordovician-Late Triassic bryozoan ("moss animal") Fenestella
Life restoration of the Permian lungfish Gnathorhiza
Fossil of the Middle-Late Ordovician giant trilobite Isotelus .
Life restoration of the Permian reptile Labidosaurus
Life restoration of the Permian snake-like amphibian Lysorophus showing speculative egg-coiling behavior
Life restoration of the Permian synapsid (mammal precursor) Mycterosaurus
Life restoration of the Carboniferous-Permian synapsid (mammal precursor) Ophiacodon
Fossil of the trilobite Paciphacops
Fossil of the Late Ordovician cystoid echinoderm Pleurocystites
Fossilized skeleton of the Permian primitive four-limbed animal Seymouria
Fossilized leaves and branches of the Devonian-Triassic horsetail relative Sphenophyllum
Fossilized shell of the Ordovician-Silurian brachiopod Strophomena
Life restoration of the Permian synapsid (mammal precursor) Varanops
Life restoration of the Early Cretaceous theropod dinosaur Acrocanthosaurus
Mounted fossilized skeleton of the Late Jurassic long-necked dinosaur Brontosaurus
Life restoration of the Early Cretaceous dromaeosaur ("raptor") Deinonychus
Restoration of the Late Jurassic-Early Cretaceous crocodile relative Goniopholis
Fossilized skeleton of the Late Triassic amphibian Koskinonodon
Fossilized skeleton of the Early Cretaceous-Eocene bony fish Palaeobalistum
Life restoration of the Miocene elephant relative Amebelodon . Margret Flinsch (1932).
Mounted fossilized skeleton of the Pleistocene Bison latifrons , or long-horned bison
Life restoration of the Pliocene-Holocene camel Camelops
Life restoration of the Pliocene-Holocene elephant relative Cuvieronius
A living Pantherophis obsoletus , or black rat snake
Life restoration of the Pleistocene bovid Euceratherium , or the shrub ox. Robert Bruce Horsfall (1913).
Mounted fossilized skeleton of the Pleistocene armadillo relative Glyptotherium
Restoration of Pliocene-Pleistocene Homotherium , or scimitar cat
Painting of a family of mammoths walking
Life restoration of a herd of Mammuthus columbi , or Columbian mammoths. The extent of the fur depicted is hypothetical. Charles R. Knight (1909).
Partial fossilized mandible of the Miocene-Pliocene horse Nannippus
Life restoration of the Pleistocene ground sloth Nothrotheriops
Fossilized skeleton of the Pliocene-Pleistocene ground sloth Paramylodon
Restoration of a herd of alarmed Miocene-Pleistocene peccaries of the genus Platygonus . Charles R. Knight (1922).
Life restoration of the Pleistocene-Holocene saber-tooth cat Smilodon
Fossilized skeleton of the Miocene weasel Sthenictis
Restoration of the Miocene-Pliocene rhinoceros Teleoceras
A living Vulpes velox , or swift fox