Walcott, C. D. (1884). Paleontology of the Eureka district. <em>United States Geological Survey Monograph.</em> 8(8): 1-298., available online athttps://biodiversitylibrary.org/page/19654888 page(s): 170, pl. 5, fig. 7 [details]
original descriptionWalcott, C. D. (1884). Paleontology of the Eureka district. <em>United States Geological Survey Monograph.</em> 8(8): 1-298., available online athttps://biodiversitylibrary.org/page/19654888 page(s): 170, pl. 5, fig. 7 [details]
Present Inaccurate Introduced: alien Containing type locality