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Many significant fossils curated by museums in Europe and the United States were found in Ohio. [1] Major local fossil discoveries include the 1965 discovery of more than 50,000 Devonian fish fossils in Cuyahoga County. The Ordovician trilobite Isotelus maximus is the Ohio state invertebrate fossil.
Fossil of the Middle-Late Ordovician giant trilobite Isotelus. Life restoration of the Carboniferous-Permian amphibian Phlegethontia. Life restoration with a conifer-like body plan of the Silurian-Late Devonian tree-like probable fungus Prototaxites. John William Dawson (1888).
October 15, 1966. The Great Serpent Mound is a 1,348-feet-long (411 m), three-feet-high prehistoric effigy mound located in Peebles, Ohio. It was built on what is known as the Serpent Mound crater plateau, running along the Ohio Brush Creek in Adams County, Ohio. The mound is the largest serpent effigy known in the world.
This list of the Paleozoic life of Ohio contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Ohio and are between 538.8 and 252.17 million years of age.
A cast of a Dunkleosteus fossil found near Cleveland, Ohio. The Columbus Limestone is especially fossil bearing and outcrops in a band between Columbus and Sandusky County, as well as on Kelleys Island in Lake Erie. The best fossil exposures are found at limestone quarries along the belt, which supply local concrete demand.
Paleo Crossing site. Paleo Crossing site, also known as the Old Dague Farm site, [2] is an archaeological site near Sharon Center, Ohio in Medina County where Clovis artifacts dated to 10,980 BP ± 75 years Before Present were found. [3] The Cleveland Museum of Natural History conducted an excavation from 1990 to 1993. [4]
Burning Tree Mastodon. The Burning Tree Mastodon site in Heath, southern Licking County, Ohio, represents the location where the most complete skeleton of American mastodon was found. It is dated to about 11,500 BP. It is believed that there was human presence at the site at that time.
Charles S. Prosser. The Chagrin Shale is a shale geologic formation in the eastern United States that is approximately 365 million years old. The Chagrin Shale is a gray shale that begins thin and deep underground in north-central Ohio. As it proceeds east, the formation thickens, rises to the surface, and contains greater amounts of siltstone.