Clionoidea is a taxonomic superfamily of sea slugs, specifically naked (i.e. unshelled) pteropods, marine opisthobranch gastropod mollusks in the clade Gymnosomata.[1] They are sometimes called "sea angels" or "naked sea butterflies" along with the other superfamily in the Gymnosomata. They can be found anywhere from the surface to a depth of 350 meters. They are transparent and small, with the largest of the species being up to 5 cm.
^Bouchet, P.; Rocroi, J.-P. (2005). "Classification and Nomenclator of Gastropod Families". Malacologia. 47 (1–2).
Clionoidea is a taxonomic superfamily of sea slugs, specifically naked (i.e. unshelled) pteropods, marine opisthobranch gastropod mollusks in the clade...
Rocroi (2005), the clade Gymnosomata is arranged as follows: Superfamily Clionoidea: family Clionidae family Cliopsidae family Notobranchaeidae family Pneumodermatidae...
Heterobranchia Clade: Euopisthobranchia Order: Pteropoda Superfamily: Clionoidea Family: Notobranchaeidae (Pelseneer, 1886) Genera and species See text...
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