subclass Archaeornithes
primitive reptile-like fossil birds of the Jurassic or early Cretaceous • Syn: Archaeornithes • Hypernyms: class • Member Holonyms: Aves, class Aves • Member Meronyms: genus Archaeopteryx, genus Archeopteryx, genus Sinornis, genus Ibero-mesornis, genus Archaeornis
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