List of the prehistoric life of Pennsylvania

This list of the prehistoric life of Pennsylvania contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Pennsylvania.

The Paleobiology Database records no known occurrences of Precambrian fossils in Pennsylvania.

Life restoration of the Late Devonian placoderm fish Bothriolepis
Coccosteus cuspidatus restoration, shown attacking multiple Palaeospondylus '
Fossilized foliage from the Carboniferous seed fern Cyclopteris
Life restoration of the Permian synapsid (mammal precursor) Edaphosaurus
Life restoration of the Devonian lobe-finned fish Eusthenodon
Fossil of the Late Ordovician-Permian tabulate coral Favosites
Life restoration of the Late Devonian four-limbed animal precursor Hynerpeton
Life restoration of the Late Devonian lobe-finned fish Hyneria
Fossil of the Middle-Late Ordovician giant trilobite Isotelus .
Appendage of the Cambrian radiodont Lenisicaris
Life restoration of the Permian snake-like amphibian Lysorophus showing speculative egg-coiling behavior
Fossilized shell of the Carboniferous-Permian brachiopod Neospirifer
Restoration
Fossil of the Devonian trilobite Phacops rana
Fossilized fin of the Devonian lobe-finned fish Sauripterus
Diagram of the branches of the Middle-Late Devonian vascular plant Tetraxylopteris
Fossil (right) of the Early Jurassic dinosaur footprint ichnogenus Anomoepus
Fossil of the Late Triassic shark Carinacanthus
Fossil of the Late Triassic coelacanth Diplurus
Fossilized skeleton of the Middle Triassic amphibian Mastodonsaurus
Life restoration of the Late Triassic phytosaur Rutiodon
Illustration of an Aegialia dung beetle
Restoration of an Arctodus , or short-faced bear, with a human to scale
A living Blarina brevicauda , or northern short-tailed shrew
Skeletons look identical
Modern mounted skeleton of Canis lupus , the grey wolf, to scale with a fossilized skeleton of the Pleistocene wolf Canis dirus , or dire wolf
A living Crocuta crocuta , or spotted hyena
A preserved Diacheila ground beetle
A living Emys blandingii , or Blanding's turtle
A living Gulo gulo , or wolverine
A living Pseudacris crucifer (formerly Hyla crucifer ), or spring peeper
Life restorations of a Mammut americanum , or American mastodon (right), and a Mammuthus primigenius , or wooly mammoth (left)
Restoration of the Pliocene-Pleistocene Miracinonyx , or American cheetah
A living Neofiber , or round-tailed muskrat
A living Odocoileus virginianus , or white-tailed deer
Fossilized skeleton of the Pliocene-Pleistocene ground sloth Paramylodon
Restoration of a herd of alarmed Miocene-Pleistocene peccaries of the genus Platygonus . Charles R. Knight (1922).
Life restoration of the Pleistocene-Holocene saber-tooth cat Smilodon
A living Tapirus , or tapir
A living Urocyon cinereoargenteus , or gray fox