List of the Paleozoic life of Wisconsin

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

Life restoration of the Cambrian arthropod Aglaspis
Fossil of the Silurian trilobite Arctinurus
Fossilized shell of the Silurian-Late Devonian brachiopod Atrypa reticularis
Fossil of the Early Ordovician-Silurian trilobite Bumastus
Fossil of the Silurian trilobite Calymene celebra
Illustration of a fossil of the Cambrian-modern burrow ichnogenus Chondrites
Fossil of the Middle Ordovician-Carboniferous horn coral Cornulites
Fossil of the Late Ordovician-Middle Devonian trilobite Dalmanites
Illustration of the fossilized pygidium (tail segment) of the Cambrian trilobite Dikelocephalus
Fossil of the Cambrian trilobite Ellipsocephalus
Fossil of the Late Ordovician-Permian tabulate coral Favosites
Fossil of the Ordovician-Silurian tabulate coral Halysites
Fossilized shells of the Ordovician-Carboniferous sea snail Holopea
Fossilized shells of the Cambrian-Permian brachiopod relative Hyolitha
Fossil of the Middle-Late Ordovician giant trilobite Isotelus .
Fossilized shells of the Middle Ordovician-Permian nautiloid cephalopod Kionoceras
Fossil of the Late Ordovician-Middle Devonian trilobite Leonaspis
Illustration of a fossilized shell of the Cambrian-Late Ordovician brachiopod Lingulella
Fossilized plates of the Cambrian-Early Ordovician chiton Matthevia
Fossils of the Early Devonian graptolite Monograptus
Illustration of a fossilized shell in multiple views of the Paleozoic mollusc Pelagiella .
Fossil of the Silurian-Carboniferous crinoid ("sea lily") Periechocrinus
Fossilized shell of the Ordovician brachiopod Plaesiomys
Fossilized shell of a Pleurotomaria slit snail
Fossil of the Cambrian-Ordovician trilobite Saukiella
Fossils of the Cambrian-modern worm burrow ichnogenus Skolithos
Fossilized shell of the Ordovician-Silurian brachiopod Strophomena
Life restoration of the Silurian arthropod Thylacares