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:  Bullinidae  Lamarck, 1801

Bullina lineata

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:  Diaphanoidea  Odhner, 1914
Family:  Diaphanidae  Odhner, 1914

Colpodaspis thompsoni

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

Atys semistriatus	Diniatys dentifer	Diniatys cf. dentifer	Haloa japonica	Haminoeidae sp. 01
Lamprohaminoea_evelinae	Lamprohaminoea ovalis	Liloa mongii	Liloa sp. 01	Phanerophthalmus anettae
Phanerophthalmus luteus	Phanerophthalmus perpallidus	Smaragdinella calyculata

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

Aglajidae sp. 01	Aglajidae sp. 04	Chelidonura amoena	Biuve fulvipunctata	Chelidonura hirundinina
Chelidonura pallida	Mariaglaja tsurugensis	Mariaglaja inornata	Melanochlamys ezoensis	Nakamigawaia sp. 01
Nakamigawaia sp. 02	Noalda sp. 01	Odontoglaja guamensis	Philinopsis speciosa	Spinoaglaja orientalis
Spinophallus falciphallus	Tubulophilinopsis gardineri	Tubulophilinopsis lineolata	Tubulophilinopsis pilsbryi

Family:  Gastropteridae  Swainson, 1840

Gastropteridae sp. 01	Gastropteron minutum	Gastropteron sp. 01	Gastropteron sp. 02	Sagaminopteron ornatum
Sagaminopteron psychedelicum	Siphopteron brunneomarginatum	Siphopteron flavum	Siphopteron fuscum	Siphopteron nigromarginatum
Siphopteron pohnpei	Siphopteron tigrinum

Family:  Philinidae  J.E. Gray, 1850

Philine orca

Philine orientalis

Philine rubrata

Philine trapezia

Philine sp.01

Class:  Gastropoda  Cuvier, 1797
Subclass:  Heterobranchia  J.E. Gray, 1840
Clade:  Euthyneura Spengel, 1881
Superorder:  Euopisthobranchia  Jörger et al., 2010
Clade:  Runcinacea  Burn, 1963  or
Superfamily:  Runcinoidea  H. Adams & A. Adams, 1854
Family:  Runcinidae  J.E. Gray, 1857

Metaruncina setoensis

Runcinida elioti