† Triphora kanakoffi Willett, 1948
Triphora kanakoffi Willett, 1948: 20, pl. 4, fig. 2.
Type locality. United States, California, Orange County, South side of Newport Bay Mesa .
Type stratum. Upper Pleistocene
Type material. NHMLAC 1072, holotype .
Distribution. United States, California (Willett 1948; Kanakoff & Emerson 1959).
Geological age. Pleistocene (Willett 1948; Kanakoff & Emerson 1959).