Traits taxon details
original description
(of ) Williams, H. S.; Breger, C. L. (1916). The fauna of the Chapman sandstone of Maine, including descriptions of some related species from the Moose River sandstone. <em>United States Geological Survey Professional Paper.</em> 89: 1-347., available online at https://doi.org/10.3133/pp89 page(s): 265, pl. 14, figs. 14, 15, 20, 27 [details] 
basis of record
Boucot, A. J. and Yochelson, E. L. (1966). Paleozoic Gastropoda from the Moose River synclinorium, northern Maine. <em>USGS Professional Paper.</em> 503-A., available online at https://pubs.er.usgs.gov/publication/pp503A page(s): 3, pl. 1, fig. 1-4 [details]
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