genus Archaeopteryx
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| Noun | 1. | genus Archaeopteryx - a genus of fossil birds bird genus - a genus of birds Archaeornithes, subclass Archaeornithes - primitive reptile-like fossil birds of the Jurassic or early Cretaceous archaeopteryx, Archaeopteryx lithographica, archeopteryx - extinct primitive toothed bird of the Jurassic period having a long feathered tail and hollow bones; usually considered the most primitive of all birds |
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