Cavolinioidea

Cavolinioidea
	An unidentified sea butterfly
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Heterobranchia
Clade:	Euopisthobranchia
Order:	Pteropoda
Suborder:	Euthecosomata
Superfamily:	Cavolinioidea; (Gray, 1850)
Families
	Family Cavoliniidae; Family Cliidae; Family Creseidae; Family Cuvierinidae; Family Hyalocylidae; † Family Praecuvierinidae; † Family Sphaerocinidae;

The superfamily Cavolinioidea is the most speciose group of sea butterflies. They belong to the suborder Euthecosomata.

Sea butterflies (thecosomata) are pelagic marine gastropods, so called because they swim by flapping their wing-like parapodia.

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