An Eocene Titanothere from San Diego County, California, with Remarks on the Age of the Poway Conglomerate

The occurrence of Eocene vertebrates in the Poway Conglomerate of San Diego County, California, was first brought to my attention several years ago when, in the course of excavations north of La Mesa and approximately 10 miles east and slightly north of the city of San Diego, fragmentary remains of vertebrates were encountered at a depth of 40 feet. Examination of this material, permitted through courtesy of Director Clinton G. Abbott of the San Diego Museum of Natural History, elucidated the information that several mammals found at this locality are either closely related to or identical with forms recognized in the upper Eocene fauna from the Sespe deposits, north of the Simi Valley, Ventura County.