List of the Paleozoic life of Indiana

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

†Hyolithes

Fossilized calyx of the Carboniferous crinoid ("sea lily") Abrotocrinus
Fossilized calyx and partial stem of the Devonian-Permian crinoid ("sea lily") Actinocrinites
Fossilized calyx of the Carboniferous crinoid ("sea lily") Agaricocrinus americanus , or the mushroom crinoid
Fossilized fronds of the Carboniferous-Early Cretaceous seed fern Alethopteris
Ordovician-Permian bryozoan Amplexopora
Fossil of the Carboniferous horsetail relative Annularia
Fossils of the Carboniferous-Permian bryozoan Archimedes
Fossil of the Silurian trilobite Arctinurus
Life restoration of the Early Devonian club moss relative Asteroxylon
Fossil of the Late Ordovician-Permian tabulate coral Aulopora
Fossilized shell of the Silurian-Early Triassic mollusc Bellerophon
Fossil of the Early Ordovician-Silurian trilobite Bumastus
Fossilized stems from the Carboniferous-Permian horsetail relative Calamites
Fossilized fronds of the Carboniferous seed fern Callipteridium
Fossils in enrolled posture of the Silurian trilobite Calymene niagarensis
Fossil of the Silurian eurypterid ("sea scorpion") Carcinosoma
Life restoration of the Carboniferous Chimaera relative Caseodus
Fossil of the Cambrian-Middle Devonian trilobite Cheirurus
Assemblage of fossilized shells of the Ordovician brachiopod Cincinnetina
Fossilized shell of the Middle Devonian-Permian brachiopod Cleiothyridina
Fossilized shell of the Late Devonian-Permian brachiopod Composita
Fossil of the Ordovician bryozoan Constellaria
Fossil of the Middle Ordovician-Carboniferous horn coral Cornulites
Fossilized stem segments of the Silurian crinoid ("sea lily") Crotalocrinites
Fossilized calyx and partial stem of the Silurian-Permian crinoid ("sea lily") Cyathocrinites
Fossilized foliage from the Carboniferous seed fern Cyclopteris
Fossil of the Late Ordovician-Late Devonian trilobite Cyphaspis
Fossilized shells of the Middle-Late Devonian brachiopod Cyrtospirifer
Fossil of the Late Ordovician-Middle Devonian trilobite Dalmanites
Mounted skull of the Late Devonian placoderm fish Dunkleosteus
Fossils of the Carboniferous crinoid ("sea lily") Dizygocrinus
Fossil of the Silurian-Late Devonian eurypterid ("sea scorpion") Drepanopterus
Life restoration of the Late Devonian-Carboniferous Chimaera relative Edestus
Fossil of the Middle Ordovician-Early Devonian trilobite Encrinurus
Fossilized calyx and partial stem of the Carboniferous crinoid ("sea lily") Eretmocrinus
Fossils (figures 2-10) of the Silurian-Devonian eurypterid ("sea scorpion") Erieopterus
Fossil of the Late Ordovician-Permian tabulate coral Favosites
Fossil of the Middle Ordovician-Late Triassic bryozoan ("moss animal") Fenestella
Front (left) and right side (right) views of an enrolled fossil of the Middle Ordovician-Silurian trilobite Flexicalymene
Fossilized calyx and partial stem of the Devonian-Carboniferous crinoid ("sea lily") Gilbertsocrinus
Life restoration of the Carboniferous shark Glikmanius
Diagram depicting the restored internal anatomy and multiple views of the shell of the Silurian nautiloid cephalopod Gomphoceras
Multiple views of a fossil of the Ordovician horn coral Grewingkia
Fossil of the Ordovician bryozoan ("moss animal") Hallopora
Fossil of the Middle Devonian horn coral Heliophyllum
Fossil of the Devonian colonial rugose coral Hexagonaria , also known as a Petoskey stone
Fossilized shells of the Ordovician-Carboniferous sea snail Holopea
Fossilized shells of the Cambrian-Permian brachiopod relative Hyolitha
Life restoration of the Carboniferous Chimaera relative Iniopteryx
Fossil of the Middle-Late Ordovician giant trilobite Isotelus .
Fossilized shells of the Middle Ordovician-Permian nautiloid cephalopod Kionoceras
Life restoration of the Silurian eurypterid ("sea scorpion") Kokomopterus
Restoration of the Carboniferous-Late Triassic club moss relative Lepidodendron . Eli Heimans (1911).
Shell of the Cambrian-modern brachiopod Lingula
Illustration (lower right, entry 15) of a fossilized shell in front and side views of the Silurian-Late Devonian brachiopod Meristella
Fossilized shell of the Devonian brachiopod Mucrospirifer
Fossilized shell of the Early Devonian – Triassic sea snail Naticopsis
Fossilized frond of the Carboniferous seed fern Neuropteris
Restoration of the Late Ordovician-Middle Devonian trilobite Odontopleura
Fossil of the Carboniferous crinoid ("sea lily") Onychocrinus
Restoration of the Carboniferous-Permian cartilaginous fish Orodus
Assemblage of the Early-Middle Devonian brachiopod Paraspirifer
Fossils of the Late Devonian-Permian fern-like fronds Pecopteris
Fossilized theca of the Carboniferous blastoid echinoderm ("sea bud") Pentremites
Fossil of the Silurian-Carboniferous crinoid ("sea lily") Periechocrinus
Fossil of the Late Ordovician-Late Devonian trilobite Phacops
Fossilized shell of the Ordovician brachiopod Plaesiomys
Fossilized shell of the Silurian-Early Triassic sea snail Platyceras
Fossilized shell of the Middle Ordovician-Silurian brachiopod Platystrophia
Fossil of the Silurian-Carboniferous tabulate coral Pleurodictyum
Various conodont elements of Polygnathus
Restoration of the Silurian trilobite Proetus
Life restoration of the Devonian-Permian tree fern Psaronius . Auguste Faguet (1877).
Interior and exterior of the shell of a Pteria , or winged oyster
Restoration of the Silurian-Middle Devonian eurypterid ("sea scorpion") Pterygotus
Fossilized shell of the Silurian-Eocene articulate brachiopod Rhynchonella
Fossilized calyx of the Carboniferous crinoid ("sea lily") Scytalocrinus
Fossilized stump of the Carboniferous-Permian club moss relative Sigillaria
Fossilized leaves and branches of the Devonian-Triassic horsetail relative Sphenophyllum
Fossilized shell of the Late Ordovician-Late Triassic brachiopod Spirifer
Modern shells of the polychaete worm Spirorbis
Life restorations of a male (foreground) and female (background) of the Late Devonian-Carboniferous Chimaera relative Stethacanthus
Fossilized shell of the Ordovician-Silurian brachiopod Strophomena
Fossil of the Devonian tabulate coral Syringopora
Fossil of the Silurian-Carboniferous crinoid ("sea lily") Taxocrinus (right)
Fossils of the burrow ichnogenus Thalassinoides
Fossilized shell of the Ordovician nautiloid cephalopod Treptoceras
Fossil of the Cambrian trilobite Tricrepicephalus
Fossil of the feeding trace ichnogenus Zoophycos