List of the Paleozoic life of Alabama

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

Fossilized fronds of the Carboniferous-Early Cretaceous seed fern Alethopteris
Fossil of the Carboniferous horsetail relative Annularia
Fossilized shell of the Late Ordovician-Carboniferous brachiopod Atrypa
Fossilized stems from the Carboniferous-Permian horsetail relative Calamites
Fossilized tooth of the shark Cladodus
Fossil of the Middle Ordovician-Carboniferous horn coral Cornulites
Fossilized calyx of the Carboniferous crinoid ("sea lily") Decadocrinus
Assemblage of fossils of the Cambrian trilobite Glyptagnostus
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).
Illustration of a fossilized shell of the Cambrian-Late Ordovician brachiopod Lingulella
Fossilized shell of the Early Devonian – Triassic sea snail Naticopsis
Exterior of the shell of a modern specimen of the Early Ordovician-modern marine bivalve Nucula
Fossils of the Late Devonian-Permian fern-like fronds Pecopteris
Fossilized tooth of the Carboniferous-Permian shark Petalodus
Three fossilized calyces of the Devonian-Permian crinoid ("sea lily") Platycrinites
Fossilized stump of the Carboniferous-Permian club moss relative Sigillaria
Fossilized foliage of the Late-Devonian-Cretaceous seed fern Sphenopteris
Illustration in side view of several fossils of the Cambrian burrow ichnogenus Treptichnus