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†Ordogeisonoceras Frey 1995

urn:lsid:organismnames.com:name:4267435

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P39,

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†Ordogeisonoceras Frey 1995

Frey 1995. Middle and Upper Ordovician nautiloid cephalopods of the Cincinnati Arch region of Kentucky, Indiana, and Ohio. U S Geological Survey Professional Paper, 1066-P 1995: i-iv, P1-P126