Helicina (suborder)

Helicina
Truncatellina cylindrica
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subcohort: Panpulmonata
Superorder: Eupulmonata
Order: Stylommatophora
Suborder: Helicina
Rafinesque, 1815

After excluding groups not related, the informal group Sigmurethra has become the suborder Helicina, with the following infraorders and a collection of families with no superfamily: