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5 Specimen Results
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Formation:
Pierre
Order:
Ostreida
Filter by
Phylum
Mollusca (5)
Class
Bivalvia (5)
Family
Ostreidae (4)
Pteriidae (1)
Genus
Ostrea (3)
Pseudoperna (1)
Pteria (1)
Individual/Organization
Harksen, J.C. (4)
Pettyjohn, W. (3)
Bonner, O.W. (1)
Period
Cretaceous (5)
Formation
Pierre (5)
Country
United States of America (5)
State/Province
South Dakota (5)
County
Meade (3)
Todd (1)