Wordnet polsko-angielski
(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)
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)
protoavis