Planorboidea is a superfamily of air-breathing freshwater snails, aquatic pulmonate gastropod mollusks.1]
The gastropods in this superfamily are all sinistral in shell coiling.
The monophyly of Planorboidea has been confirmed by Albrecht et al. (2007).[2]
(1-2).The Superfamily Planorboidea is further organized into finer groupings including:
Physidae, common name bladder snails, are a monophyletic taxonomic family of small freshwater snails, aquatic pulmonate gastropod molluscs in the clade Hygrophila. [more]
Planorbidae, common name the ramshorn snails or ram's horn snails, is a family of air-breathing freshwater snails, aquatic pulmonate gastropod mollusks. [more]
At least 705 species and subspecies belong to the Family Planorbidae.
More info about the Family Planorbidae may be found here.
