Knotty pebblesnail

The knotty pebblesnail, scientific name Somatogyrus constrictus, of minute freshwater snails with an operculum, aquatic gastropod molluscs or micromolluscs in the family Hydrobiidae. The taxonomic validity of this species has been questioned; it may represent morphological aberrations of other, valid species.[1][2] If it is a valid species, it would be assessed as threatened.[1]

Knotty pebblesnail
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
(unranked):
clade Caenogastropoda
clade Hypsogastropoda
clade Littorinimorpha
Superfamily:
Truncatelloidea
Family:
Hydrobiidae
Genus:
Somatogyrus
Species:
S. constrictus
Binomial name
Somatogyrus constrictus
Walker, 1904

References
  1. Cordeiro, J. (2011). "Somatogyrus constrictus". IUCN Red List of Threatened Species. 2011: e.T20353A9190379. doi:10.2305/IUCN.UK.2011-2.RLTS.T20353A9190379.en. Retrieved 14 January 2018.
  2. Clark, Stephanie (2007). "Preliminary survey of the Hydrobiidae of Alabama" (PDF). Alabama Department of Conservation and Natural Resources. Archived from the original (PDF) on 16 September 2012. Retrieved 7 April 2012.


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