15 Specimen Results

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Genus:

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Phylum

Order

Class

Family

Individual/Organization

Walker, M.V. (1)

Harksen, J.C. (8)

Miller, H.W. (1)

Pettyjohn, W. (8)

Period

Cretaceous (15)

Formation

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United States of America (15)

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South Dakota (8)

County