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Cladus: Eukaryota
Supergroup: Opisthokonta
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Spiralia
Cladus: Lophotrochozoa
Phylum: Mollusca
Classis: Gastropodae
Subclassis: Orthogastropoda
Superordo: Heterobranchia
Ordo: Pulmonata
Subordo: Eupulmonata
Clade: Stylommatophora
Cladus: Orthurethra
Informal group: Sigmurethra
Superfamilia: Testacelloidea
Familiae: Testacellidae

The Testacelloidea are a superfamily of air-breathing land snails and slugs, terrestrial gastropod mollusks in the informal group Sigmurethra.[1]


The families within the Testacelloidea are as follows:[1]

* Family Testacellidae Gray, 1840
* Family Oleacinidae H. Adams & A. Adams, 1855
* Family Spiraxidae H. B. Baker, 1939

This taxonomy was based on the study by Nordsieck, published in 1986,[2] and the publication by Schileyko in 2000.[3]


1. ^ a b Bouchet P., Rocroi J.-P., Frýda J., Hausdorf B., Ponder W., Valdés Á. & Warén A. (2005). "Classification and nomenclator of gastropod families". Malacologia: International Journal of Malacology (Hackenheim, Germany: ConchBooks) 47 (1-2): 1–397. ISBN 3925919724. ISSN 0076-2997. http://www.archive.org/details/malacologia47122005inst.
2. ^ H. Nordsieck (1986). "The system of the Stylommatophora (Gastropoda), with special regard to the systematic position of the Clausiliidae, II. Importance of the shell and distribution". Archiv für Molluskenkunde 117 (1-3): 93–116.
3. ^ A.A. Schileyko (1998-2003). "Treatise on recent terrestrial pulmonate molluscs". Ruthenica suppl. 2: 1–1626.

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Source: Wikipedia, Wikispecies: All text is available under the terms of the GNU Free Documentation License