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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.
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.
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).
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]
Ohio's State Invertebrate Fossil, is a trilobite found in the formation. The Southern Hemisphere where Ohio was located at the end of the Ordovician experienced a widespread glaciation, around 438 million years ago. Sea level dropped due to the glaciation, accompanied by a subsidence of the land.
Prehistory of Ohio provides an overview of the activities that occurred prior to Ohio's recorded history. The ancient hunters, Paleo-Indians (13000 B.C. to 7000 B.C.), descended from humans that crossed the Bering Strait. There is evidence of Paleo-Indians in Ohio, who were hunter-gatherers that ranged widely over land to hunt large game.
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.
Waynesville Formation (Upper Ordovician) exposed near St. Leon, Indiana. The Waynesville Formation is a geologic formation in Ohio and Indiana. It preserves fossils from the Late Ordovician period .