Clade Neritimorpha

(= Neritopsina)

Unassigned to superfamily
- Family Craspedostomatidae †
- Family Pragoscutulidae †
Superfamily Nerrhenoidea
- Family Nerrhenidae †
Superfamily Oriostomatoidea
- Family Oriostomatidae †
- Family Tubinidae †
Superfamily Palaeotrochoidea

Helicina clappi (Helicinidae), a terrestrial relative of nerites
from Florida. Picture: Robert Pilla (Jacksonville Shell Club).
- Family Palaeotrochidae †
Superfamily Platyceratoidea
- Family Platyceratidae †

Family Orthonychiidae †

Family Vltaviellidae †

Superfamily Helicinoidea
- Family Helicinidae
- Family Dawsonellidae †
- Family Deaniridae †
- Family Neritiliidae
- Family Proserpinellidae
- Family Proserpinidae
Superfamily Hydrocenoidea

Fresh water nerite (Theodoxus danasteri). View of the animal
and its operculum. Picture: © Alexander Mrkvicka.
- Family Hydrocenidae
Superfamily Neritoidea
- Family Neritidae
- Family Phenacolepadidae
- † Family Pileolidae
Superfamily Neritopsoidea
- Family Neritopsidae
- Family Cortinellidae †
- Family Delphinulopsidae †
- Family Plagiothyridae †
- Family Pseudorthonychiidae †
- Family Titiscaniidae
Superfamily Symmetrocapuloidea
- Family Symmetrocapulidae †