archaeopteryxPronunciation: /ˌɑːkɪˈɒptərɪks/Definition of archaeopteryx noun the oldest known fossil bird, of the late Jurassic period. It had feathers, wings, and hollow bones like a bird, but teeth, a bony tail, and legs like a small coelurosaur dinosaur. Archaeopteryx lithographica, subclass Archaeornithes Origin:from archaeo- 'ancient' + Greek pterux 'wing'archaeopteryx in other Oxford dictionaries Definition of archaeopteryx in the US English dictionary
