Oldroyd, T. S., 1921. New Pleistocene mollusks from California. The Nautilus: A Quarterly Devoted to Malacology, 34. no. 4: 114 -116 .
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New Species-Group Names:
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fossilis Oldroyd, 1921. p. 116. pl. 5. f. 9.
Oldroyd, T. S., 1921. New Pleistocene mollusks from California. The Nautilus: A Quarterly Devoted to Malacology, 34. no. 4: 114 -116 .