Neoplanorbis umbilicatus

† Neoplanorbis umbilicatus was a species of air-breathing freshwater snail, an aquatic pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails.

Neoplanorbis umbilicatus
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
(unranked):
clade Heterobranchia
clade Euthyneura
clade Panpulmonata
clade Hygrophila
Superfamily:
Planorboidea
Family:
Planorbidae
Subfamily:
Neoplanorbinae
Genus:
Neoplanorbis
Species:
† N. umbilicatus
Binomial name
Neoplanorbis umbilicatus
Walker, 1908

This species was endemic to the United States. It is now extinct. The shells of this species appear to be dextral in coiling, but as is the case in all planorbids, the shell is actually sinistral. The shell was carried upside down with the aperture on the right, and this makes it appear to be dextral.

References
  1. Bogan A. E. (2000) Neoplanorbis umbilicatus. 2006 IUCN Red List of Threatened Species. Downloaded on 7 August 2007.


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