Acorn ramshorn

Taxobox
name = Acorn ramshorn


status = EX | status_system = IUCN2.3
regnum = Animalia
phylum = Mollusca
classis = Gastropoda
ordo = Basommatophora
familia = Planorbidae
genus = "Planorbella"
species = "P. multivolvis"
binomial = "Planorbella multivolvis"
binomial_authority = (Case, 1847)
synonyms =

The acorn ramshorn ("Planorbella multivolvis") was a species of small freshwater air-breathing snail, a pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails.

It was endemic to the United States.

It is now considered to be extinct.

References

* Bogan, A.E. 2000. [http://www.iucnredlist.org/search/details.php/17480/all Planorbella multivolvis] . [http://www.iucnredlist.org 2006 IUCN Red List of Threatened Species. ] Downloaded on 07 August 2007.