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