. . "101038636"@en-us . "101515583"^^ . "protoavis"@en-us . . "0"^^ . . . "101437987"@en-us . . "01515583-n"^^ . "0"^^ . "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"@en-us . . . "protoavis"^^ . . .