MolluscaBase name details
original description
Whiteaves, J. F. (1884). Part 3. On the fossils of the coal-bearing deposits of the Queen Charlotte Islands collected by Dr. G. M. Dawson in 1878. In: Mesozoic fossils. Volume 1. Geological and Natural History Survey of Canada, Montreal, pp. 191-262 + pls. 21-32., available online at https://www.biodiversitylibrary.org/page/14897890
page(s): 251, pl. 33, fig. 7 [details]