protoavis

Thesaurus

Noun

1.

protoavis - most primitive avian type known; extinct bird of the Triassic having bird-like jaw and hollow limbs and breastbone with dinosaur-like tail and hind limbs bird - warm-blooded egg-laying vertebrates characterized by feathers and forelimbs modified as wings genus Protoavis - extinct primitive birds of the Triassic period; 70 million years before archaeopteryx