This article contains a list of fossil-bearing stratigraphic units in the state of Pennsylvania, U.S.
Sites Group or Formation Period Notes Allegheny Formation Carboniferous Ames Formation Carboniferous Anthracite Formation Carboniferous Antietam Formation Cambrian Bellefonte Formation Ordovician Bloomsburg Formation Silurian Canadaway Group/Canaseraga Formation Devonian Canadaway Group/Cuba Formation Devonian Canadaway Group/Java Formation Devonian Canadaway Group/Machias Formation Devonian Canadaway Group/Rushford Formation Devonian Catskill Formation Devonian Chatham Group/Hammer Creek Formation Triassic Chemung Formation Devonian Cherry Ridge Shale Devonian Conemaugh Group Carboniferous Conemaugh Group/Conemaugh Formation Carboniferous Conemaugh Group/Glenshaw Formation Carboniferous Conewango Group Devonian Conewango Group/Pocono Formation Devonian Conewango Group/Venango Formation Devonian Conneaut Group/Cuba silt shale (Chadakoin) Devonian Conemaugh Group Carboniferous Conemaugh Group/Duquesne Coal Carboniferous Cussewago Formation Devonian Dunkard Group/Greene Formation Permian Dunkard Group/Waynesburg Formation Permian Gatesburg Formation Cambrian Genesee Group/Ithaca Formation Devonian Gettysburg Formation Triassic Glenshaw Formation Carboniferous Hamilton Group/Mahantango Formation Devonian Hamilton Group/Marcellus Shale Devonian Harrell Formation Devonian Helderberg Formation Devonian Jennings Formation Devonian Keyser Limestone Silurian Kinzers Formation Cambrian Llewellyn Formation Carboniferous Lock Haven Formation Devonian Lockatong Formation Triassic Pocono Formation Devonian Mahantango Formation Devonian Manlius Limestone Devonian Martinsburg Formation Ordovician Mauch Chunk Formation Carboniferous Mercer Formation Carboniferous Mifflintown Formation Silurian Monongahela Group/Pittsburgh Formation Carboniferous New Oxford Formation Triassic Newark Group/Gettysburg Formation Triassic Newark Group/Lockatong Formation Triassic Newark Group/New Oxford Formation Triassic Nittany Dolomite Ordovician Old Point Formation Devonian Onondaga Formation Devonian Oswayo Sandstone Devonian Passaic Formation Triassic Pleasant Hill Limestone Cambrian Pocono Formation Carboniferous, Devonian Pottsville Formation Carboniferous Reedsville Group/ Martinsburg Formation Ordovician Rockdale Run Formation Ordovician Rose Hill Formation Silurian Shawangunk Formation Silurian Sonyea Group/Delaware River Formation Devonian Stockton Formation Triassic Stonehenge Formation Ordovician Susquehanna Group/Chemung Formation Devonian Titusville Till Tomstown Dolomite Cambrian Venango Formation Devonian Vintage Dolomite Cambrian Warrior Formation Cambrian Washington Formation Permian
See also
Paleontology in Pennsylvania
References