求有关恐龙的知识.（要用英语介绍,简短点）
问题描述：
求有关恐龙的知识.（要用英语介绍,简短点）
答
Dinosaurs are a diverse group of animals that were the dominant terrestrial vertebrates for over 160 million years,from the late Triassic period (about 230 million years ago) until the end of the Cret...