Plesiomiacis, a new creodont from the Sespe upper Eocene, California

Abstract

The creodont described in this paper was found recently at Calif. Inst. Tech. Vert. Pale. Locality 207 in the Brea Canyon section of the Sespe deposits north of the Simi Valley, California. The faunal stage occurring here has a stratigraphic position approximately 675 feet lower in the section than Locality 150, and is unquestionably more closely related in age to that found at Locality 180 approximately 3 miles to the east along the strike of the Sespe deposits. These lower faunal horizons in the Sespe are now regarded as belonging to the Upper Eocene, while the stage recorded at Locality 150 has been assigned to the uppermost Eocene.

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