List of the Paleozoic life of Kansas

This list of the Paleozoic life of Kansas contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Kansas and are between 538.8 and 252.17 million years of age.

†Fusulina

Life restoration of the Early Devonian-Permian "spiny shark" Acanthodes
Fossilized teeth of the Permian-Paleocene cartilaginous fish Acrodus
Fossilized fronds of the Carboniferous-Early Cretaceous seed fern Alethopteris
Fossil of the Carboniferous horsetail relative Annularia
Life restoration of the Carboniferous synapsid (mammal precursor) Archaeovenator
Mold fossil of a shell of the Early Devonian-Late Triassic bivalve Aviculopecten
Restoration of the Carboniferous Chimaera relative Belantsea
Living Botryococcus green algae
Fossilized stems from the Carboniferous-Permian horsetail relative Calamites
Life restoration of the Carboniferous Chimaera relative Caseodus
Fossilized tooth of the shark Cladodus
Fossilized shell of the Late Devonian-Permian brachiopod Composita
Fossilized foliage of the Carboniferous-Permian conifer relative Cordaites
Fossil of the Carboniferous shark Ctenacanthus
Shell of a Dentalium tusk shell
Fossils of the Cambrian-modern arthropod trackway ichnogenus Diplichnites
Life restoration of the Late Devonian-Carboniferous Chimaera relative Edestus
Life restoration of the Carboniferous synapsid (mammal precursor) Eocasea
Assemblage of fossils of Silurian-Permian fusulinid foraminiferans
Fossilized shell of the Carboniferous-Eocene bivalve Gervillia
Life restoration of the Carboniferous shark Glikmanius
Fossils of the burrow ichnogenus Helminthopsis
Fossilized skeleton of the Permian-Late Cretaceous shark Hybodus
Restoration of the Carboniferous synapsid (mammal precursor) Ianthasaurus
Restoration of the Carboniferous-Permian ray-like cartilaginous fish Janassa (top and left)
Phosphate nodules containing fossils of the Carboniferous Chimaera relative Kawichthys
Fossil of the Late Jurassic horseshoe crab Mesolimulus at the end of the trackway that it produced of the ichnogenus Kouphichnium
Restoration of the Carboniferous-Late Triassic club moss relative Lepidodendron . Eli Heimans (1911).
Restoration of the Carboniferous-Early Triassic cartilaginous fish Listracanthus
Life restoration of the Permian snake-like amphibian Lysorophus showing speculative egg-coiling behavior
Fossilized shell of the Carboniferous-Permian nautiloid cephalopod Metacoceras
Fossilized shell of the Devonian-modern marine bivalve Modiolus , or horsemussel
Fossilized shell of the Early Devonian – Triassic sea snail Naticopsis
Fronds of the Carboniferous seed fern Neuropteris
Life restoration of the Carboniferous-Permian synapsid (mammal precursor) Ophiacodon
Restoration of the Carboniferous-Permian cartilaginous fish Orodus
Fossilized skeleton of the Permian bony fish Palaeoniscum
Fossils of the Late Devonian-Permian fern-like fronds Pecopteris
Fossilized tooth of the Carboniferous-Permian shark Petalodus
Life restoration of the Carboniferous reptile Petrolacosaurus
Life restoration of the Carboniferous-Permian bony fish Platysomus
Fossilized stump of the Carboniferous-Permian club moss relative Sigillaria
Fossilized leaves and branches of the Devonian-Triassic horsetail relative Sphenophyllum
Restoration of the Carboniferous reptile Spinoaequalis
Fossil of the Devonian tabulate coral Syringopora
Illustration in side view of several fossils of the Cambrian burrow ichnogenus Treptichnus
Fossilized foliage of the Carboniferous-Permian conifer Walchia