Helicarionoidea is a superfamily of air-breathing land snails and

semi-slug Semi-slugs, also spelled semislugs, are land gastropods whose shells are too small for them to retract into, but not quite vestigial. The shell of some semi-slugs may not be easily visible on casual inspection, because the shell may be covered ...

terrestrial Terrestrial refers to things related to land or the planet Earth. Terrestrial may also refer to: * Terrestrial animal, an animal that lives on land opposed to living in water, or sometimes an animal that lives on or near the ground, as opposed to ...

pulmonate gastropod

mollusk Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is e ...

s in the infraorder Limacoidei.

Families

There are three families within the superfamily Helicarionoidea: *

Helicarionidae Helicarionidae is a family of air-breathing land snails or semi-slugs, terrestrial pulmonate gastropod mollusks in the superfamily Helicarionoidea. Distribution The distribution of Helicarionidae includes the eastern Palearctic, Malagasy, In ...

Ariophantidae Ariophantidae is a taxonomic family of air-breathing land snails and semi-slugs, terrestrial pulmonate gastropod mollusks in the superfamily Helicarionoidea (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005). Distribution ...

* Urocyclidae

Cladogram

The following

cladogram A cladogram (from Greek ''clados'' "branch" and ''gramma'' "character") is a diagram used in cladistics to show relations among organisms. A cladogram is not, however, an evolutionary tree because it does not show how ancestors are related to ...

shows the

phylogenic In biology, phylogenetics (; from Greek φυλή/ φῦλον [] "tribe, clan, race", and wikt:γενετικός, γενετικός [] "origin, source, birth") is the study of the evolutionary history and relationships among or within groups o ...

relationships of this family to other families within the

limacoid clade The Limacoidei is a taxonomic infraorder of air-breathing land snails, semislugs and slugs, terrestrial pulmonate gastropod molluscs in the suborder Helicina Distribution The original ancestral area of limacoid families is thought to b ...

:Hausdorf B. (March 2000). "Biogeography of the Limacoidea sensu lato (Gastropoda: Stylommatophora): Vicariance Events and Long-Distance Dispersal". '' Journal of Biogeography'' 27(2): 379-390.
JSTOR

Genera

Genera of helicarionoids unassigned to families include: * '' Pseudosaphtia'' de Winter, 2008 * '' Saphtia'' de Winter, 2008 * '' Vanmolia'' de Winter, 2008

References

{{Taxonbar, from=Q5704955 Stylommatophora Gastropod superfamilies