MolluscaBase taxon details
Helicodiscus parallelus (Say, 1821)
1002295 (urn:lsid:marinespecies.org:taxname:1002295)
accepted
Species
Helicodiscus (Helicodiscus) parallelus (Say, 1821) · alternative representation
Helicodiscus lineatus (Say, 1817) · unaccepted (junior synonym)
Helicodiscus theresa Thiele, 1927 · unaccepted
Helix lineata Say, 1817 · unaccepted (invalid: junior homonym of Helix...)
invalid: junior homonym of Helix lineata Olivi, 1792
Planorbis paralellus Say, 1821 · unaccepted
(of Planorbis paralellus Say, 1821) Say, T. (1821). Description of univalve shells of the United States. <em>Journal of the Academy of Natural Sciences of Philadelphia.</em> 2(1): 149-179., available online at https://www.biodiversitylibrary.org/page/36831337
page(s): 164 [details]
page(s): 164 [details]
MolluscaBase eds. (2025). MolluscaBase. Helicodiscus parallelus (Say, 1821). Accessed at: https://www.molluscabase.org/aphia.php?p=taxdetails&id=1002295 on 2025-05-01
The webpage text is licensed under a Creative Commons
Attribution 4.0 License
original description
(of Helix lineata Say, 1817) Say, T. (1817). Descriptions of seven species of American fresh water and land shells, not noticed in the systems. <em>Journal of the Academy of Natural Sciences.</em> Philadelphia 1(1): 13–16, 17–18., available online at http://archive.org/stream/journalofacademy01acaduoft#page/n21/mode/2up
page(s): 18 [details]
original description (of Planorbis paralellus Say, 1821) Say, T. (1821). Description of univalve shells of the United States. <em>Journal of the Academy of Natural Sciences of Philadelphia.</em> 2(1): 149-179., available online at https://www.biodiversitylibrary.org/page/36831337
page(s): 164 [details]
original description (of Helicodiscus theresa Thiele, 1927) Thiele, J. (1927). Über einige brasilianische Landschnecken. <em>Abhandlungen der Senckenbergischen Naturforschenden Gesellschaft.</em> 40 (3): 307-329, pl. 26. Frankfurt am Main. [details] Available for editors
[request]
basis of record Bank, R. A.; Neubert, E. (2017). Checklist of the land and freshwater Gastropoda of Europe. Last update: July 16th, 2017. [details]
additional source Pilsbry, H. A. (1911). Land shells of Atlantic City, New Jersey. <em>The Nautilus.</em> 25(3): 34-35., available online at https://www.biodiversitylibrary.org/page/1818213
page(s): 35 [details]
additional source Vanatta, E. G. (1927). Mollusks in shagnum moss. <em>The Nautilus.</em> 41(1): 34., available online at https://www.biodiversitylibrary.org/page/8519761 [details]
additional source Rawls, H. C. & Yates, R. L. (1971). Fluorescence in endodontid snails. <em>The Nautilus.</em> 85(1): 17-20., available online at https://www.biodiversitylibrary.org/page/8516113 [details]
page(s): 18 [details]
original description (of Planorbis paralellus Say, 1821) Say, T. (1821). Description of univalve shells of the United States. <em>Journal of the Academy of Natural Sciences of Philadelphia.</em> 2(1): 149-179., available online at https://www.biodiversitylibrary.org/page/36831337
page(s): 164 [details]
original description (of Helicodiscus theresa Thiele, 1927) Thiele, J. (1927). Über einige brasilianische Landschnecken. <em>Abhandlungen der Senckenbergischen Naturforschenden Gesellschaft.</em> 40 (3): 307-329, pl. 26. Frankfurt am Main. [details] Available for editors
[request]basis of record Bank, R. A.; Neubert, E. (2017). Checklist of the land and freshwater Gastropoda of Europe. Last update: July 16th, 2017. [details]
additional source Pilsbry, H. A. (1911). Land shells of Atlantic City, New Jersey. <em>The Nautilus.</em> 25(3): 34-35., available online at https://www.biodiversitylibrary.org/page/1818213
page(s): 35 [details]
additional source Vanatta, E. G. (1927). Mollusks in shagnum moss. <em>The Nautilus.</em> 41(1): 34., available online at https://www.biodiversitylibrary.org/page/8519761 [details]
additional source Rawls, H. C. & Yates, R. L. (1971). Fluorescence in endodontid snails. <em>The Nautilus.</em> 85(1): 17-20., available online at https://www.biodiversitylibrary.org/page/8516113 [details]
Present Inaccurate Introduced: alien Containing type locality
