Taxon Description (Wikipedia)
| image = Notodoris minor.jpg
| image_caption =
Notodoris minor
| regnum = Animalia
| phylum = Mollusca
| classis = Gastropoda
| unranked_familia = clade Heterobranchia
informal group
Opisthobranchia
| subdivision_ranks = Clades and groups
| subdivision =
clade Cephalaspidea
clade Thecosomata
clade Gymnosomata
clade Aplysiomorpha
group Acochlidiacea
clade Sacoglossa
group Cylindrobullida
clade Umbraculida
clade Nudipleura
}}
Opisthobranchs, , are a large and diverse group of specialized complex marine gastropods previously united under
Opisthobranchia within the Heterobranchia.
Opisthobranch means
gills behind (and to the right of the heart). In contrast
Prosobranch means
gills in... full article at Wikipedia
