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Planorbarius

Genus of gastropods

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Planorbarius is a genus of air-breathing freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae (the ramshorn snails), which all have sinistral or left-coiling shells.

01Description

All species within family Planorbidae have sinistral shells.

Many species in this genus have been found to be diploid with 18 pairs, or 36 total, chromosomes. Differences in chromosomal length and other indicators were not different enough to distinguish individual species.

Planorbarius corneus. View of the sunken spire (held facing downwards in life)
Planorbarius corneus. View of the sunken spire (held facing downwards in life)

02Species

Species within this genus include:

Extant
Extinct
Uncertain (Taxon Inquirendum)
Species brought into synonymy (Selection)
  • Planorbarius borelli (Brusina, 1892): synonym of † Planorbarius borellii (Brusina, 1892)
  • Planorbarius cornus (Brongniart, 1810): synonym of † Planorbarius cornu (Brongniart, 1810)
  • Planorbarius grandis (Halaváts, 1903): synonym of † Planorbarius halavatsi Neubauer, Harzhauser, Kroh, Georgopoulou & Mandic, 2014
  • Planorbarius thiollierei (Michaud, 1855): synonym of † Planorbarius thiollieri (Michaud, 1855)
Planorbarius corneus. View of umbilicus (held uppermost in life)
Planorbarius corneus. View of umbilicus (held uppermost in life)
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Sources and credits

This article is adapted from the Wikipedia article Planorbarius, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.

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