GANOIDEI

Ganoidei, order Ganoidei

(noun) a group of mostly extinct primitive bony fishes characterized by armor-like bony scales

Source: WordNet® 3.1

Ga*noi"de*i, n. pl. Etym: [NL. See Ganoid.] (Zoöl.)

Definition: One of the subclasses of fishes. They have an arterial cone and bulb, spiral intestinal valve, and the optic nerves united by a chiasma. Many of the species are covered with bony plates, or with ganoid scales; others have cycloid scales.

Note: They were numerous, and some of them of large size, in early geological periods; but they are represented by comparatively few living species, most of which inhabit fresh waters, as the bowfin, gar pike, bichir, Ceratodus, paddle fish, and sturgeon.

Source: Webster’s Unabridged Dictionary 1913 Edition