Phylum Mollusca Linnaeus, 1758 - molluscs
Class Gastropoda Cuvier, 1795 - snails and slugs
Subclass Prosobranchia Milne-Edwards, 1848 - prosobranchs
see Class Gastropoda Cuvier, 1795
Order Caenogastropoda Cox, 1960
see Superorder Caenogastropoda Cox, 1960
Suborder Neotaenioglossa Haller, 1882
see Order Sorbeoconcha Ponder & Lindberg, 1997
Superfamily Trivioidea F.H. Troschel, 1863
see Superfamily Velutinoidea Gray, 1840
Family Triviidae Troschel, 1863 - trivias
Subfamily Triviinae Troschel, 1863
1 Tribe Triviellini Schilder, 1939
see Subfamily Triviinae Troschel, 1863
2 Tribe Triviini Troschel, 1863 [monotypic]
see Subfamily Triviinae Troschel, 1863
3 Tribe Pusulini Schilder, 1936
see Subfamily Triviinae Troschel, 1863