Entity:

Concise hierarchy

Current position

Gastropoda (Class) Cuvier, 1795

Ref: W.B. Rudman, 1998-present: 30 Mar 2006. [implicit]

Opisthobranchia (Subclass) Milne-Edwards, 1848

Ref: J.J. Sepkoski Jr., 2002: 113.

*Opisthobranchia* (Subclass) Milne-Edwards, 1848	Ref: J.J. Sepkoski Jr., 2002: 113.
*Opisthobranchia* (Subclass) Milne-Edwards, 1848	Ref: V.G. Millard, 1997: 219.
*Opisthobranchia* (Subclass) Milne-Edwards, 1848	Ref: 1995
*Opisthobranchia* (Subclass) Milne-Edwards, 1848	Ref: R.C. Brusca & G.J. Brusca, 1990
*Opisthobranchia* (Subclass) Milne-Edwards, 1848	Ref: K.J. Boss, 1982: 1034.
*Opisthobranchia* (Subclass) Milne-Edwards, 1848	Ref: T.I. Storer et al., 1979