4 Specimen Results

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Individual/Organization:Stewart, J.D. Class:Chondrichthyes

FHSM VP-2222
Ptychodus rugosus (Dixon, 1850)
Formation: Niobrara
Period(Early): Cretaceous

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FHSM VP-3367
Ptychodus anonymus (Williston, 1900)
Formation: Niobrara
Period(Early): Cretaceous

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FHSM VP-6388
Ptychodus mortoni (Agassiz, 1843)
Formation: Niobrara
Period(Early): Cretaceous

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FHSM VP-10634
Ptychodus mortoni (Agassiz, 1843)
Formation: Niobrara
Period(Early): Cretaceous

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