A black and white photo of a fossil of a Trogosus skull. According to the note referred to as same as above, this was found in 1947 with the Smithsonian party in Wyoming.
black and white photograph
© University Archives, Fort Hays State University
Digitized by Forsyth Digital Collections
Sternberg, George Fryer 1883-1969, "074_04: A Fossil of a Trogosus skull" (2021). George Sternberg Album #8 - 1940. 334.