great ramshorn snail (Planorbarius corneus) A live individual of Planorbarius corneus, carrying the shell with the umbilicus uppermost
Description
Deutsch: Posthornschnecke (Planorbarius corneus) weidet Algen auf dem Beton eines Seerosenteiches ab.
English: Photo of an albino great ramshorn (Planorbarius corneus) eating algae from the concrete in a lily pond.
Date May 2007
Source Own work
Author Claus Ableiter https://commons.wikimedia.org/wiki/User:Claus_Ableiter
Source: https://commons.wikimedia.org/wiki/File:Posthornschnecke1.jpg
Planorbarius corneus, common name the great ramshorn, is a relatively large species of air-breathing freshwater snail, an aquatic pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails, or planorbids, which all have sinistral or left-coiling shells. The shell of this species appears to be dextral in coiling, even though it is in fact sinistral or left-handed. Superfamily: Planorboidea, Family: Planorbidae, Genus: Planorbarius, Species: Planorbarius corneus (Linnaeus, 1758).
Synonyms:
Helix cornea Linnaeus, 1758
Planorbis adelosius Bourguignat, 1859
