Abstract
Anapteris van winkle (1919) is a distinctive corbulid genus characterized by the left valve having a peculiar wing-like flare anteriorly and both valves having the posterior area set off by a prominent umbonal keel (Vokes, 1945; Keen, 1969). Heretofore this genus has been known only from the type species, A. regalis Van Winkle (1919; 1921), which has been recorded only from the upper middle Eocene (Bartonian) Piney Point Formation in Virginia (Ward, 1985). The purpose of this note is to record the second known occurrence of Anapteris. The genus is present in the lower middle Eocene of southern California, where it is represented by Corbula wardii Hanna (1927).
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