Haller, 1882
The following subtaxa of this order occur in the region:
Suborder Ptenoglossa
Family Aclididae
Family Adeorbidae
Family Aporrhaiidae
Family Assimineidae
Family Barleeidae
Family Caecidae
Family Calyptraeidae
Family Capulidae
Family Cerithiidae
Family Cerithiopsidae
Family Epitoniidae
Family Eratoidae
Family Eulimidae
Family Hydrobiidae
Family Iravadiidae
Family Lacunidae
Family Lamellariidae
Family Littorinidae
Family Naticidae
Family Ovulidae
Family Ranellidae
Family Rissoidae
Family Skeneopsidae
Family Tornidae
Family Triphoridae
Family Triviidae
Family Turritellidae
Family Velutinidae
Genus Aclis
Genus Alvania
Genus Amauropsis
Genus Aporrhais
Genus Assiminea
Genus Barleeia
Genus Bittium
Genus Caecum
Genus Calyptraea
Genus Capulus
Genus Cerithiella
Genus Cerithiopsis
Genus Charonia
Genus Cheirodonta
Genus Cingula
Genus Circulus
Genus Crepidula
Genus Crisilla
Genus Epitonium
Genus Erato
Genus Eulima
Genus Euspira
Genus Haliella
Genus Hyala
Genus Hydrobia
Genus Lacuna
Genus Lamellaria
Genus Littorina
Genus Manzonia
Genus Marshallora
Genus Melanella
Genus Melaraphe
Genus Mercuria
Genus Obtusella
Genus Onoba
Genus Pelseneeria
Genus Potamopyrgus
Genus Pusillina
Genus Semisalsa
Genus Simnia
Genus Skeneopsis
Genus Tornus
Genus Trichotropis
Genus Trivia
Genus Turritella
Genus Velutina
Genus Ventrosia
Genus Vitreolina
Aclis minor
Aclis walleri
Alvania abyssicola
Alvania beani
Alvania cimicoides
Alvania jeffreysi
Alvania lactea
Alvania punctura
Alvania subsoluta
Amauropsis islandica
Aporrhais pespelecani
Aporrhais serresianus
Assiminea grayana
Barleeia unifasciata
Bittium reticulatum
Caecum clarkii
Caecum glabrum
Caecum trachea
Calyptraea chinensis
Capulus ungaricus
Cerithiella metula
Cerithiopsis tubercularis
Charonia lampas
Cheirodonta pallescens
Cingula trifasciata
Circulus striatus
Crepidula fornicata
Crisilla semistriata
Epitonium clathratulum
Epitonium clathrus
Epitonium trevelyanum
Epitonium turtonis
Erato voluta
Eulima bilineata
Eulima glabra
Euspira catena
Euspira fusca
Euspira montagui
Euspira pallida
Euspira pulchella
Haliella stenostoma
Hyala vitrea
Hydrobia neglecta
Hydrobia ulvae
Lacuna crassior
Lacuna pallidula
Lacuna parva
Lacuna vincta
Lamellaria latens
Lamellaria perspicua
Littorina arcana
Littorina fabalis
Littorina littorea
Littorina neglecta
Littorina nigrolineata
Littorina obtusata
Littorina saxatilis
Manzonia crassa
Marshallora adversa
Melanella alba
Melanella lubrica
Melanella monterosatoi
Melaraphe neritoides
Mercuria confusa
Obtusella intersecta
Onoba aculea
Onoba semicostata
Pelseneeria minor
Potamopyrgus antipodarum
Pusillina inconspicua
Pusillina sarsii
Rissoa lilacina
Rissoa membranacea
Rissoa parva
Rissoa porifera
Semisalsa stagnorum
Simnia patula
Skeneopsis planorbis
Tornus subcarinatus
Trichotropis borealis
Trivia arctica
Trivia monacha
Turritella communis
Velutina plicatilis
Velutina velutina
Ventrosia ventrosa
Vitreolina philippi