We found 2 definitions of protoavis from 2 different sources.
NounPlural: protoavis |
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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 |