original description
(of Planorbis bicarinatus var. royalensis B. Walker, 1909) Walker, B. (1909). Notes on <i>Planorbis</i> II: <i>P. bicarinatus</i>. <em>The Nautilus.</em> 23(1): 1-10, pl. 1; 23(2): 21-32, pl. 2-3 (maps)., available online at https://www.biodiversitylibrary.org/page/5314504
page(s): 9 [details]
original description
(of Helisoma anceps rushi F. C. Baker, 1939) Baker, F. C. (1939). Land and fresh-water Mollusca from western Ontario. <em>Canadian Journal of Research, series D.</em> 17: 87-102.
page(s): 94, fig. 1 [details]
basis of record
Burch, J. B. (1989). <i>North American freshwater snails</i>. Malacological Publications, Hamburg, Michigan. pp. i-viii, 1-365.
page(s): 198 [details]
additional source
Clarke, A. H. (1973). The freshwater molluscs of the Canadian Interior Basin. <em>Malacologia.</em> 13(1-2): 1-509., available online at http://biodiversitylibrary.org/page/13110006
page(s): 443, pl. 25, figs. 20-22 [details]
From editor or global species database
Type locality USA, Michigan, Siskowit Lake, Isle Royale, Lake Superior, [details]