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Ohio was a low-lying swampy plain near the coast during the Pennsylvanian. Its latitude was near the equator. Sea levels rose and fell sporadically so the rock record shows a history of land, freshwater, and sea deposits. Fossils of land plants are common in Ohio's Pennsylvanian rocks.
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.
Fossil of the Middle-Late Ordovician giant trilobite Isotelus. †Isotelus †Isotelus maximus †Kindleoceras †Kionoceras †Kockelella †Lambeoceras †Leiosphaeridia †Lepidodendron †Lepidodendron aculeatum; Lingula †Liroceras – tentative report †Loxomma †Loxomma lintonensis – type locality for species †Maelonoceras ...
It is common to designate a fossilized species, rather than a single specimen or a category of fossils. State fossils are distinct from other state emblems like state dinosaurs , state stones , state minerals , state gemstones or state rocks and a state may designate one, a few, or all of those.
This list of fossil sites is a worldwide list of localities known well for the presence of fossils. Some entries in this list are notable for a single, unique find, while others are notable for the large number of fossils found there.
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.
The Columbus conformably overlies the Lucas Dolomite in northeastern Ohio, and unconformably overlies other dolomite elsewhere. It unconformably underlies the Ohio Shale in northwestern Ohio and the Delaware Limestone in eastern Ohio. [2] Its members include: Bellepoint, Marblehead, Tioga Ash Bed, Venice, Delhi, Klondike, and East Liberty.
The Chagrin Shale is found in north-central and northeastern Ohio, and in northwestern Pennsylvania. [7] The Chagrin Shale reaches a maximum thickness of 1,200 feet (370 m) in eastern Ohio. [7] In Ohio, the Chagrin Shale is thin in the west, [2] [3] and thickens as it proceeds east. [7] The Chagrin Shale also extends south into West Virginia. [9]