In the mid and latter parts of the nineteenth century, many scientists thought there was a close relationship between birds and dinosaurs—and that dinosaurs represented an intermediate stage between "reptiles" and birds.
19 세기 중반과 후반에 많은 과학자들이 새와 공룡이 가까운 관계이며 공룡이 "파충류"와 새의 중간단계를 대표한다고 생각했다.