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The Upper Ordovician of North America is the Cincinnatian Series, named for the richly fossiliferous beds in the Ohio—Indiana—Kentucky tri-state area surrounding Cincinnati, Ohio. This area is near or beyond the southern extent of Pleistocene glaciation, so bedrock is exposed or covered only thinly with glacial sediments. Hillsides, stream beds and road cuts expose the interbedded shale and limestone Cincinnatian strata, and fossils virtually tumble from rocks into collecting bags. This physical backdrop of abundant fossils and layered strata has been an intellectual seed for more than a century and a half. Many now-famous palaeontologists grew up in Cincinnati, including R. S. Bassler, J. M. Nickles, C. Schuchert and E. O. Ulrich. Caster (1981) referred to early Cincinnati geologists as the 'publishing amateurs' or in the case of those just listed as the 'amateurs-turned-professionals'.
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The Upper Ordovician of North America is the Cincinnatian Series, named for the richly fossiliferous beds in the Ohio—Indiana—Kentucky tri-state area surrounding Cincinnati, Ohio. This area is near or beyond the southern extent of Pleistocene glaciation, so bedrock is exposed or covered only thinly with glacial sediments. Hillsides, stream beds and road cuts expose the interbedded shale and limestone Cincinnatian strata, and fossils virtually tumble from rocks into collecting bags. This physical backdrop of abundant fossils and layered strata has been an intellectual seed for more than a century and a half. Many now-famous palaeontologists grew up in Cincinnati, including R. S. Bassler, J. M. Nickles, C. Schuchert and E. O. Ulrich. Caster (1981) referred to early Cincinnati geologists as the 'publishing amateurs' or in the case of those just listed as the 'amateurs-turned-professionals'.
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