Order Basommatophora Keferstein 1864 (pulmonate)
Parent taxon: Pulmonata according to J. A. Todd 2001
Sister taxa: Basommatophora, Endodontidae, Eupulmonata, Grangerellidae, Melampoidea, Oreohelicidae, Pleurodontidae, Pupillidae, Sagdidae, Stylommatophora
Subtaxa: Acroloxus, Acroreia, Limnophila, Lymnaeacea, Patellopsis, Pleurolimnaea, Pseudohercynella, Ptychogyra, Siphonacmea, Siphonarioidea, Trimusculus, Vasculum
Ecology: epifaunal