List of the Paleozoic life of Arizona

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

Fossil of the Carboniferous horsetail relative Annularia
Fossils of the Carboniferous-Permian bryozoan Archimedes
Mold fossil of a shell of the Early Devonian-Late Triassic bivalve Aviculopecten
Fossilized shell of the Silurian-Early Triassic mollusc Bellerophon
Fossilized stems from the Carboniferous-Permian horsetail relative Calamites
Fossils of the Devonian-Permian horn coral Caninia
Fossilized shell of the Late Devonian-Permian brachiopod Composita
Life restoration of the Silurian-Early Devonian primitive land plant Cooksonia
Fossilized shells of the Middle-Late Devonian brachiopod Cyrtospirifer
Fossil of the Cambrian trilobite Elrathia
Fossilized shell of the Silurian-Permian sea snail Euomphalus
Assemblage of fossils of Silurian-Permian fusulinid foraminiferans
Life restoration of the Carboniferous shark Glikmanius
Life restoration of the Permian lungfish Gnathorhiza
Fossil of the Devonian colonial rugose coral Hexagonaria , also known as a Petoskey stone
Fossil of the Cambrian trilobite Kootenia
Restoration of the Carboniferous-Late Triassic club moss relative Lepidodendron . Eli Heimans (1911).
Illustration of a fossilized shell of the Cambrian-Late Ordovician brachiopod Lingulella
Fossilized shell of the Carboniferous-Permian nautiloid cephalopod Metacoceras
Fossilized shell of the Early Devonian – Triassic sea snail Naticopsis
Fronds of the Carboniferous seed fern Neuropteris
Life restoration of the Carboniferous-Permian amphibian Ophiderpeton
Fossilized foliage of the Carboniferous-Late Cretaceous plant Pagiophyllum
Fossils of the Late Devonian-Permian fern-like fronds Pecopteris
Fossilized theca of the Carboniferous blastoid echinoderm ("sea bud") Pentremites
Life restoration of the Carboniferous-Permian amphibian Phlegethontia .
Various conodont elements of Polygnathus
A living Serpula , or calcareous tubeworm
Fossilized shell of the Late Ordovician-Late Triassic brachiopod Spirifer
Fossil preserved in situ of a Carboniferous tree-like club moss relative with attached Stigmaria rhizome system
Fossil of the Devonian tabulate coral Syringopora
Life restoration of the Carboniferous-Triassic freshwater shark Triodus
Restoration of the Permian trilobite Vidria
Fossilized foliage of the Carboniferous-Permian conifer Walchia