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Trochorbis

Trochorbis is a genus of freshwater snails in the family Planorbidae. The type species is Trochorbis trochoideus.

Trochorbis
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Superorder: Hygrophila
Family: Planorbidae
Genus: Trochorbis
W. H. Benson, 1855[1]
Type species
Planorbis trochoideus W.H. Benson, 1836
Synonyms[2]
  • Planorbis (Trochorbis) W. H. Benson, 1855
  • Segmentina (Trochorbis) W. H. Benson, 1855; superseded rank

Taxonomy

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This genus was orignally described as a subgenus of Planorbis, named Planorbis (Trochorbis), by William Henry Benson in 1855.[1] Later authors considered Trochorbis to be synonymous with the genus Segmentina,[3][4][5] sometimes displaying it as the subgenus Planorbis (Segmentina).[6][7] In 1945, Frank C. Baker restated the group as it currently appears: its own independent genus within the subfamily Segmentininae (now tribe Segmentinini).[8] The type species is Trochorbis trochoideus.[2][8]

The genus is hypothesized to be closely related to the genus Polypylis due to similar shell characteristics.[8]

Description

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Species of Trochorbis are distinguished by a disc-shaped shell where the final (body) whorl covers most of the other whorls.[9]

Species

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Species within this genus include:[2]

One species remains uncertain (incertae sedis):

References

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  1. 1 2 Benson, W. H. (1855). "Chusan shells". The Journal of the Asiatic Society of Bengal. 24 (2): 126. ISSN 0368-1068. LCCN 08000088. OCLC 1824093 – via Biodiversity Heritage Library.
  2. 1 2 3 Vinarski, Maxim (2022). "Trochorbis W. H. Benson, 1855". WoRMS. World Register of Marine Species.
  3. ↑ Dall, W. H. (1906). "Note on some forgotten mollusk-names". The Nautilus (journal). 19 (9): 105. ISSN 0028-1344. LCCN sf80000648. OCLC 1759527 – via Biodiversity Heritage Library.
  4. ↑ Kennard, A. S.; Woodward, B. B. (1926). Synonymy of the British non-marine Mollusca (Recent and post-tertiary). pp. 89–90. doi:10.5962/bhl.title.8325. OCLC 6389905 – via Biodiversity Heritage Library.
  5. ↑ Germain, L. (1923). "Catalogue of the Planorbidae in the Indian Museum (Natural History), Calcutta". Records of the Indian Museum (in French). 21 (3): 175. ISSN 0375-099X. OCLC 1427183 – via Biodiversity Heritage Library.
  6. ↑ Preston, H. B. (1915). Shipley, A. E.; Marshall, G. A. K. (eds.). The fauna of British India including Ceylon and Burma. London: Taylor & Francis. p. 125. doi:10.5962/bhl.title.100762.
  7. ↑ Geoffrey, N. (1878). Hand list of Mollusca in the Indian Museum, Calcutta. Vol. 1. Calcutta. p. 246. doi:10.5962/bhl.title.54249. OCLC 18790669 – via Biodiversity Heritage Library.{{cite book}}: CS1 maint: location missing publisher (link)
  8. 1 2 3 Baker, F. C. (1945). von Cleave, H. J. (ed.). The molluscan family Planorbidae. University of Illinois Press. pp. 108–109. doi:10.5962/bhl.title.7026. ISBN 978-1021493705. LCCN a45002301. OCLC 843977. Archived from the original on 2 July 2008. {{cite book}}: ISBN / Date incompatibility (help)
  9. ↑ Hubendick, B. (1955). "Phylogeny in the Planorbidae". Transactions of the Zoological Society of London. 28: 515. doi:10.1111/j.1096-3642.1955.tb00004.x.
  • Bank, R. A. (2017). Classification of the Recent freshwater/brackish Gastropoda of the World. Last update: January 24th, 2018. OpenAccess publication.
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