Vokes, H. E., 1939. Molluscan Faunas of the Domengine and Arroyo Hondo Formations of the California Eocene. Annals of the New York Academy of Sciences, 38: 1 -246 .
New Species-Group Names:
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caleocius Vokes, 1939. p. 127. pl. xviii. f. 1. 7.
