Hesperocyon (dog ancestor) Jaw Section with Tooth, Brule Formation
Hesperocyon (dog ancestor) Jaw Section with Tooth, Brule Formation

Hesperocyon (dog ancestor) Jaw Section with Tooth, Brule Formation

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0.6" Eumys (mouse ancestor) Jaw section from the Brule Formation of Custer County, South Dakota. 35-30 million years old.

Authentic, legally collected fossils for sale.