( n. pl. )
An order of pelagic Gastropoda, having the foot developed into a median fin. Some of the species are naked; others, as Carinaria and Atlanta, have thin glassy shells.
( n. pl. )
An order of pelagic Gastropoda, having the foot developed into a median fin. Some of the species are naked; others, as Carinaria and Atlanta, have thin glassy shells.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012