SUBCLASS:PROSOBRANCHIA

Order: Archaeogastropoda

Superfamily Pleurotomariacea  

Superfamily Fissurellacea          

Superfamily Patellacea               : 

Superfamily Trochacea              

Superfamily Neritacea                 

Order: Mesogastropoda

Superfamily Rissoacea

Superfamily Rissoinacea 

Superfamily Cerithacea

Superfamily Strombacea: 

Superfamily Naticacea

Superfamily Lamellariacea

Superfamily Cypracea

Superfamily Tonnacea

Order: Neogastropoda

Superfamily Muricacea

Superfamily Buccinacea

Superfamily Volutacea

Superfamily Conacea

Order: Heterogastropoda

Superfamily Triphoracea

Superfamily Epitoniacea

SUBCLASS: OPISTOBRANCHIA

Order: Bullomorpha

Order: Pyramidellidae