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Opisthobranchia

Classification

Heterobranchia [subclass]
(328 species)
Opisthobranchia [superorder] (155)
Anaspidea [order] (13)
Cephalaspidea [order] (32)
Nudibranchia [order] (59)
Runcinacea [order] (1)
Sacoglossa [order] (27)
Thecosomata [order] (18)
Umbraculida [order] (1)

Classification

Heterobranchia [subclass]
(328 species)
Opisthobranchia [superorder] (155)
Anaspidea [order] (13)
Cephalaspidea [order] (32)
Nudibranchia [order] (59)
Runcinacea [order] (1)
Sacoglossa [order] (27)
Thecosomata [order] (18)
Umbraculida [order] (1)

Species group experts for this database