See text The Limacoidei is a taxonomic infraorder of air-breathing land snails, semislugs and slugs, terrestrial pulmonate gastropod molluscs in the suborder Helicina.

The study of A. Schileyko in this group, published in parts 8–11 of his monograph between 2002 and 2003, did not discuss the system that Hausdorf had proposed.

[5] For this particular group of families, Bouchet & Rocroi adapted the taxonomic approach which was originally published by German malacologist Bernhard Hausdorf in 1998 in the Journal of Molluscan Studies.

[2] Bouchet & Rocroi clearly state, on p. 283:[1] The "limacoid clade" includes the families Staffordioidea, Dyakioidea, Gastrodontoidea, Parmacelloidea, Zonitoidea, Helicarionoidea and Limacoidea.

The taxonomy of Bouchet and Rocroi[1] shows the "limacoid clade" as follows: (Families that are exclusively fossil are indicated with a dagger †) A cladogram showing phylogenic relations of families in the limacoid clade:[3] Staffordiidae Dyakiidae Pristilomatidae Chronidae Euconulidae Trochomorphidae Gastrodontidae Oxychilidae Trigonochlamydidae Parmacellidae Milacidae Zonitidae Helicarionidae Ariophantidae Urocyclidae Vitrinidae Boettgerillidae Limacidae Agriolimacidae As explained in the previous section, the superfamilies Arionoidea and Helicoidea do not belong to the limacoid clade.