Traits taxon details
original description
(of ) Hall, J. (1861). Report of the Superintendent of the Geological Survey, exhibiting the progress of the work [including descriptions of new species offossils from the investigations of the survey]. Madison, 52 pp., available online at https://www.biodiversitylibrary.org/page/41155657 page(s): 30-31 [details]
basis of record
Ulrich, E. O.; Scofield, W. H. (1894). The Lower Silurian Lamellibranchiata of Minnesota. In: E. O. Ulrich, W. H. Scofield, J. M. Clarke & N. H. Winchell (eds), Final Report of the Geological and Natural History Survey of Minnesota, vol. 3, part 2, The Geology of Minnesota. Paleontology. p. 475–628, pl. 35–46., available online at https://www.biodiversitylibrary.org/page/14923334 page(s): 512-513, pl. 36, figs 27, 28 [details]
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