Museum, University of Nebraska State


Date of this Version

January 2005


Published in The Coleopterists Bulletin, 59(1):127–135. 2005. Copyright © 2005 Brett C. Ratcliffe, Dena Smith, & Diane Erwin.


Oryctoantiquus borealis Ratcliffe and Smith is described as a new genus and new species of fossil dynastine Scarabaeidae from West Branch Creek of the Middle Eocene Clarno Formation (44.6–46.8 Ma) of north-central Oregon, U.S.A. This specimen is the oldest specimen attributable to the subfamily Dynastinae and the largest fossil in the family Scarabaeidae.

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