ornithurous, a. Zool.
(ɔːnɪˈθjʊərəs)
[f. mod.L. Ornithūræ, fem. pl., f. ornitho- + Gr. οὐρά tail.]
lit. Bird-tailed; of or pertaining to the Ornithuræ or ordinary birds having a tail terminated by a pygostyle, as opposed to the Saururæ or lizard-tailed birds, represented by the fossil Archæopteryx.