Gȳr'a-cānthus, n.
n. [Gr. γυρός, round, and ἄκανθα, spine.] (Paleon.) A genus of fossil, placoid fishes, found in the strata of the carboniferous period. Agassiz.
n. [Gr. γυρός, round, and ἄκανθα, spine.] (Paleon.) A genus of fossil, placoid fishes, found in the strata of the carboniferous period. Agassiz.