previously placed in the Order: CEPHALASPIDEA, in the Subclass: OPISTHOBRANCHIA

Class : Gastropoda  Cuvier, 1797
Subclass:  Heterobranchia  J.E. Gray, 1840
informal group:  Lower Heterobranchia (Allogastropoda)  Haszprunar, 1985
according to Bouchet & Rocroi (2005) is the superfamily Acteonoidea no more in the Order Cephalaspidea

Superfamily:  Acteonoidea  d'Orbigny, 1843
Family:  Aplustridae  J.E. Gray, 1847

Hydatina amplustre

Hydatina physis

Hydatina zonata

Micromelo barbarae

Micromelo guamensis

Class:  Gastropoda  Cuvier, 1797
Subclass:  Heterobranchia  J.E. Gray, 1840
Clade:  Euthyneura Spengel, 1881
Superorder:  Euopisthobranchia  Jörger et al., 2010
Order:  Cephalaspidea  P. Fischer, 1883
Superfamily:  Bulloidea  J.E. Gray, 1827
Family:  Bullidae  J.E. Gray, 1827

Bulla ampulla

Bulla orientalis

Bulla peasiana

Bulla sp. 01

Bulla sp. 02

Superfamily: Cylichnoidea  H. Adams & A. Adams, 1854
Family: Diaphanidae  Odhner, 1914

Colpodaspis thompsoni

Colpodaspis sp. 01

Colpodaspis sp. 02

Mnestia girardi

Superfamily:  Haminoeoidea  Pilsbry, 1895
Family:  Haminoeidae  Pilsbry, 1895

Aliculastrum cylindricum	Aliculastrum debile	Atys naucum	Atys semistriatus	Atys sp.01
Atys sp.02	Atys sp.03	Atys sp.04	Atys sp.05	Atys sp.06
Atys sp.08	Atys sp.09	Diniatys dentifer	Diniatys dubius	Haminoea sp. 04
Haminoea sp. 05	Haminoea sp. 06	Haminoeidae sp. 02	Haminoeidae sp. 03	Haminoeidae sp. 04
Haminoeidae sp. 06	Haminoeidae sp. 07	Haminoeidae sp. 08	Haminoeidae sp. 09	Lamprohaminoea cymbalum
Lamprohaminoea_evelinae	Lamprohaminoea ovalis	Liloa mongii	Phanerophthalmus albotriangulatus	Phanerophthalmus anettae
Phanerophthalmus batangas	Phanerophthalmus luteus	Phanerophthalmus paulayi	Roxaniella multistriata

Superfamily:  Philinoidea  J.E. Gray, 1850 (1815)
Family:  Aglajidae  Pilsbry, 1895 (1847)

Chelidonura amoena	Chelidonura electra	Biuve fulvipunctata	Chelidonura hirundinina	Chelidonura livida
Chelidonura pallida	Chelidonura varians	Mariaglaja alexisi	Mariaglaja inornata	Mariaglaja mandroroa
Mariaglaja sp. 01	Mariaglaja tsurugensis	Nakamigawaia spiralis	Niparaya sp. 01	Noalda sp. 01
Noalda sp. 02	Odontoglaja guamensis	Odontoglaja sp. 01	Philinopsis ctenophoraphaga	Philinopsis speciosa
Spinoaglaja orientalis	Spinophallus falciphallus	Tubulophilinopsis gardineri	Tubulophilinopsis lineolata	Tubulophilinopsis pilsbryi
Tubulophilinopsis reticulata	Tubulophilinopsis sp. 01

Family:  Cylichnidae  H. Adams & A. Adams, 1854

Acteocina sp. 01

Family:  Gastropteridae  Swainson, 1840

Gastropteridae sp. 02	Gastropteridae sp. 03	Gastropteridae sp. 04	Gastropteron bicornutum	Gastropteron minutum
Gastropteron multo	Gastropteron sp. 04	Sagaminopteron bilealbum	Sagaminopteron nigropunctatum	Sagaminopteron ornatum
Sagaminopteron psychedelicum	Sagaminopteron sp. 01	Siphopteron brunneomarginatum	Siphopteron flavolineatum	Siphopteron flavum
Siphopteron ladrones	Siphopteron leah	Siphopteron cf. leah	Siphopteron makisig	Siphopteron nakakatuwa
Siphopteron sp. 03	Siphopteron sp. 06	Siphopteron sp. 07	Siphopteron tigrinum

Family:  Philinidae  J.E. Gray, 1850

Philine orca

Philine orientalis

Philine rubrata

Oder:  Runcinacea  Burn, 1963

Superfamily:  Runcinoidea  H. Adams & A. Adams, 1854
Family:  Ilbiidae  Burn, 1963

Ilbiidae sp. 01

Runcina sp. 04