original description
Cockerell, T. D. A. (1914). Tertiary Mollusca from New Mexico and Wyoming. <em>Bulletin of the American Museum of Natural History.</em> 33: 101-107.
page(s): 104, pl. 10, figs 1-3 [details]
From editor or global species database
Type locality Cockerell (1914) reported the locality as "Either Puerco or Torrejon; probably Torrejon." According to Henderson (1935) and Hartman (1981), the occurrence in the San Juan Basin seems doubtful. [details]