01 n. pl. An extinct order of birds having a long vertebrated tail with quills along each side of it. Archaeopteryx is the type. See Archaeopteryx, a…
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An extinct order of birds having a long vertebrated tail with quills along each side of it. Archaeopteryx is the type. See Archaeopteryx, and Odontornithes.(Paleon.) See: Archaeopteryx, Odontornithes