protoavis / ˌproʊ toʊˈeɪ vɪs /

📖毕业后词汇原生代原子星

protoavis 的定义

n. 名词 noun
  1. a fossil bird of the genus Protoavis, from the Triassic Period, having a birdlike, partly toothless jaw structure, a tail and hind legs resembling those of the dinosaur, and the hollow bones and keellike breast that are characteristic of modern birds: the oldest known avian type, preceding the archaeopteryx by an estimated 75 million years.