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Individual/Organization:Armstrong, A. Family:Ptychodontidae

FHSM VP-13323
Ptychodus whipplei (Marcou, 1853)
Formation: Carlile
Period(Early): Cretaceous

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FHSM VP-13324
Ptychodus anonymus (Williston, 1900)
Formation: Carlile
Period(Early): Cretaceous

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FHSM VP-13325
Ptychodus (Agassiz, 1837)
Formation: Carlile
Period(Early): Cretaceous

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