Genus:
Peristichia >
Family:
Pyramidellidae >
Superfamily:
Pyramidelloidea >
Superorder:
Pylopulmonata >
Subterclass:
Tectipleura >
Infraclass:
Euthyneura >
Subclass:
Heterobranchia >
Class:
Gastropoda >
Phylum:
Mollusca >
Kingdom:
Animalia >
Unranked:
Biota >