Opisthobranchia
Appearance
Translingual
[edit]Etymology
[edit]From opisthobranch (“with the gills behind the heart”).
Proper noun
[edit]Opisthobranchia
- (obsolete) A taxonomic subclass within the class Gastropoda – a polyphyletic taxon including all opisthobranchs; some core members are now classified as the Euopisthobranchia.