|  archaeopteryx 
 
 extinct primitive toothed bird of the Jurassic period having a long feathered tail and hollow bones;
 usually considered the most primitive of all birds
 • Syn:
 archeopteryx, Archaeopteryx lithographica
 • Hypernyms:
 bird
 • Member Holonyms:
 genus Archaeopteryx, genus Archeopteryx
 
 
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