Teuthide
in zoölogy, calamaries, or squids; a family of dibranchiate Cephalopods, section Octopoda. Body elongated; fins short, broad, and mostly terminal; shell horny, consisting of a shaft and two lateral expansions or wings. There are 18 genera, very widely distributed, which D'Orbigny divided into two sub-families: Myopsidæ (having the eyes covered with skin) and Oigopsidæ (having the eyes naked, fins terminal and united, forming a rhomb).