Hypertext Webster Gateway: "Ganoidei"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Ganoidei \Ga*noi"de*i\, n. pl. [NL. See {Ganoid}.] (Zo["o]l.)
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.
From WordNet (r) 1.7 (wn)
Ganoidei
n : a group of mostly extinct primitive bony fishes
characterized by armor-like bony scales [syn: {Ganoidei},
{order Ganoidei}]
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