首页 > Term: mammal
mammal
Hairy, warm-blooded vertebrates that nourish their young with milk (hence the name). About 5,500 species in all, and all descended from a common ancestor of the anteater, platypus, marsupials like the kangaroo, and placentals. The extinction of the dinosaurs 65. 5 million years ago made way for the growth of large mammals. 40% are rodents.
- 词性: noun
- 行业/领域: 生物学
- 类别 生态学
- Company: Terrapsych.com
0
创建者
- Surus
- 3.03% positive feedback