Fossil Arthropods of California: 11. Descriptions of the Dung Beetles (Scarabaeidae) of the Tar Pits
Pierce, W. Dwight
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In sorting the vast amount of insect material extracted from the asphaltum of Rancho La Brea, Hancock Park, Los Angeles, the most exciting material so far segregated is a series of fragments of five or six species of Scarabaeidae, or dung beetles, belonging to the genera Canthon, Copris, and Onthophagus, and one which must be separated as a new genus between Copris and Phanaeus.