archaeopteryx

Noun
  1. Extinct primitive toothed bird of the Jurassic period having a long feathered tail and hollow bones;
    Usually considered the most primitive of all birds (synset 101518853)
    hypernym: bird - warm-blooded egg-laying vertebrates characterized by feathers and forelimbs modified as wings
    member meronym: genus archaeopteryx, genus archeopteryx - a genus of fossil birds
    synonym: archaeopteryx lithographica, archeopteryx

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