Primitive reptile-like fossil birds of the Jurassic or early Cretaceous. Synonym: subclass Archaeornithes.
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Words linked to "Archaeornithes" : Aves, class Aves, subclass Archaeornithes, genus Sinornis, genus Archaeopteryx, genus Archeopteryx, genus Archaeornis, genus Ibero-mesornis, class |
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