Traits taxon details
original description
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): 617 [details]
basis of record
Soot-Ryen, H.; Soot-Ryen, T. (1960). The Middle Ordovician of the Oslo Region, Norway. 11. Pelecypoda. <em>Norsk Geologisk Tidsskrift.</em> 40: 81-122. [details] Available for editors 
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