MolluscaBase name details
Helisoma (Pierosoma) trivolvis (Say, 1817)
1312202 (urn:lsid:marinespecies.org:taxname:1312202)
unaccepted > superseded combination
Species
Helisoma (Pierosoma) Dall, 1905 accepted as Planorbella (Pierosoma) Dall, 1905 represented as Planorbella Haldeman, 1843
- Subspecies Helisoma (Pierosoma) trivolvis kolymense Lindholm, 1932 † accepted as Planorbella trivolvis kolymensis (Lindholm, 1932) † (unaccepted > superseded combination)
- Subspecies Helisoma (Pierosoma) trivolvis subcrenatum (P. P. Carpenter, 1857) accepted as Planorbella subcrenata (P. P. Carpenter, 1857) (superseded rank and combination)
recent only
(of Planorbis trivolvis Say, 1817) Say, T. (1817). Conchology. - In: Nicholson, W.: American edition of the British Encyclopedia, or, dictionary of arts and sciences comprising an accurate and popular view of the present improved state of human knowledge. First Edition, A-3 - C-6 [= 1-20], pl. [1-4].
page(s): [unpaginated], pl. 2, fig. 2 [details]
page(s): [unpaginated], pl. 2, fig. 2 [details]
MolluscaBase eds. (2025). MolluscaBase. Helisoma (Pierosoma) trivolvis (Say, 1817). Accessed at: https://www.molluscabase.org/aphia.php?p=taxdetails&id=1312202 on 2025-09-11
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original description
(of Planorbis trivolvis Say, 1817) Say, T. (1817). Conchology. - In: Nicholson, W.: American edition of the British Encyclopedia, or, dictionary of arts and sciences comprising an accurate and popular view of the present improved state of human knowledge. First Edition, A-3 - C-6 [= 1-20], pl. [1-4].
page(s): [unpaginated], pl. 2, fig. 2 [details]
basis of record 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): 452 [details]
page(s): [unpaginated], pl. 2, fig. 2 [details]
basis of record 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): 452 [details]
