Gastropoda - Pulmonata

Parent taxon: Pulmonata according to P. D. Gingerich 1987

Sister taxa: Basommatophora, Basommatophora, Eupulmonata, Grangerellidae, Melampoidea, Oreohelicidae, Pleurodontidae, Pupillidae, Sagdidae, Stylommatophora

Subtaxa: Discus, Helicodiscus

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Ecology: epifaunal