4 Specimen Results

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Class

Family

Acanthoceratidae (30)

Acanthodidae (7)

Acrodontidae (1)

Acrospiriferidae (2)

Actinoceratidae (1)

Agassizodontidae (1)

Genus

has media

Has no media (1)

Individual/Organization

Harksen, J.C. (3)

Pettyjohn, W. (3)

C.H. Sternberg (1)

Period

Epoch

Pleistocene (1)

Formation

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United States of America (4)

State/Province

South Dakota (3)

County