Biota (Life)
Eukaryote (Eukarya)
Podiata
Unikont (Unikonta)
Opisthokont (Opisthokonta)
Holozoa
Filozoa
Apoikozoa (Choanozoa)
Animal (Animalia)
Metazoa
Epitheliozoa
Eumetazoa
Bilateria
Nephrozoa (Eubilateria)
Protostome (Protostomia)
Spiralia (Spiralians)
Lophotrochozoa
Mollusca (Molluscs)
Gastropoda (Gastropod)
Heterobranchia
Euthyneura
Tectipleura
Eupulmonata
Stylommatophora
Helicina (Helicina (subordo))
Orthalicoidei
Orthalicoidea
Odontostomidae
Children (3 direct children, 3 direct and indirect children):
Pilsbrylia dalli
Pilsbrylia hyltonae
Pilsbrylia paradoxa