Planorbis
Animal
Planorbis is a genus of air-breathing freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails, or planorbids. All species in this genus have sinistral or left-coiling shells. Wikipedia
Scientific name: Planorbis
Class: Gastropoda
Higher classification: Planorbidae
Lower classifications: Planorbis planorbis, Planorbis corinna, and Planorbis kahuica
Phylum: Mollusca
Genus: Planorbis; O. F. Müller, 1774