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Genus:Ptychodus County:Lane

FHSM VP-15532
Ptychodus mortoni (Agassiz, 1843)
Formation: Niobrara
Period(Early): Cretaceous

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FHSM VP-16585
Ptychodus (Agassiz, 1837)
Formation: Niobrara
Period(Early): Cretaceous

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