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The Testacelloidea are a superfamily of air-breathing
land snail A land snail is any of the numerous species of snail that live on land, as opposed to the sea snails and freshwater snails. ''Land snail'' is the common name for terrestrial molluscs, terrestrial gastropod mollusks that have gastropod shell, shel ...
s and
slug Slug, or land slug, is a common name for any apparently shell-less Terrestrial mollusc, terrestrial gastropod mollusc. The word ''slug'' is also often used as part of the common name of any gastropod mollusc that has no shell, a very reduced ...
s,
terrestrial Terrestrial refers to things related to land or the planet Earth, as opposed to extraterrestrial. 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 o ...
gastropod Gastropods (), commonly known as slugs and snails, belong to a large Taxonomy (biology), taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, freshwater, and fro ...
mollusc Mollusca is a phylum of protostome, protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000 extant taxon, extant species of molluscs are recognized, making it the second-largest animal phylum ...
s in the suborder Helicina of the order
Stylommatophora Stylommatophora is an orderPhilippe Bouchet, Jean-Pierre Rocroi, Bernhard Hausdorf, Andrzej Kaim, Yasunori Kano, Alexander Nützel, Pavel Parkhaev, Michael Schrödl and Ellen E. Strong. 2017. Revised Classification, Nomenclator and Typification of ...
.MolluscaBase eds. (2020). MolluscaBase. Testacelloidea Gray, 1840. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=933883 on 2020-11-09


Taxonomy

The families within the Testacelloidea are as follows: *Family Testacellidae Gray, 1840 This taxonomy was based on the study by Nordsieck, published in 1986, and the publication by Schileyko in 2000. The following families, previously categorized within the Testacelloidea, were transferred to the superfamily Oleacinoidea H. Adams & A. Adams, 1855 in 2017. *Family Oleacinidae H. Adams & A. Adams, 1855 *Family
Spiraxidae Spiraxidae is a family (biology), family of predatory air-breathing land snails, terrestrial molluscs, terrestrial pulmonate gastropods in the superfamily Testacelloidea (according to the Taxonomy of the Gastropoda (Bouchet & Rocroi, 2005), taxon ...
H. B. Baker, 1939


References

{{Taxonbar, from=Q7705823 Stylommatophora Taxa named by John Edward Gray Gastropod superfamilies Monotypic protostome taxa