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

Class:  Gastropoda  Cuvier, 1797
Clade:  Heterobranchia  J.E. Gray, 1840
Infraclade:  Lower Heterobranchia (Allogastropoda)   Haszprunar, 1985
according to Bouchet & Rocroi (2005) are
the superfamilies: Acteonoidea and Ringiculoidea no more in the Suborder Cephalaspidea of the Subclass: OPISTHOBRANCHIA

Superfamily:  Acteonoidea  d'Orbigny, 1843
Family:  Acteonidae  d'Orbigny, 1835


Rictaxis punctocaelatus
       

Class:  Gastropoda  Cuvier, 1797
Clade:  Heterobranchia  J.E. Gray, 1840
Clade:  Euthyneura  Spengel, 1881
Clade:  Euopisthobranchia  Jörger et al., 2010
Clade:  Cephalaspidea  P. Fischer, 1883

Superfamily:  Bulloidea  Lamarck, 1801
Family:  Bullidae  Lamarck, 1801


Bulla gouldiana
       

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


Haminoea japonica

Haminoea vesicula

Haminoea virescens
   

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


Aglaja ocelligera

Melanochlamys diomedea

Navanax inermis

Navanax polyalphos
 

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


Acteocina culcitella

Cylichna attonsa
     

Family:  Gastropteridae  Swainson, 1840


Gastropteron pacificum
       

Family:  Philinidae  J.E. Gray, 1850


Philine cf. auriformis
       

 
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