Testacelloidea

The Testacelloidea are a superfamily of air-breathing land snails and slugs, terrestrial gastropod molluscs in the suborder Helicina of the order Stylommatophora.^[1][2]

Testacelloidea
Drawing of the shelled slug, Testacella haliotidea
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Order:	Stylommatophora
Infraorder:	Helicina
Superfamily:	Testacelloidea Gray, 1840
Families
See text

Taxonomy

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

• Family Testacellidae Gray, 1840

This taxonomy was based on the study by Nordsieck, published in 1986,^[3] and the publication by Schileyko in 2000.^[4]

The following families, previously categorized within the Testacelloidea, were transferred to the superfamily Oleacinoidea H. Adams & A. Adams, 1855 in 2017.^[5]

• Family Oleacinidae H. Adams & A. Adams, 1855
• Family Spiraxidae H. B. Baker, 1939