300：兽族崛起丨走向新生代
· 1 h 02 min
Episode 300：兽族崛起丨走向新生代
0:00
1:01:43
为什么恐龙、鸟类、哺乳类都在白垩纪迎来了多样性的爆发？哪些因素的共同作用使得哺乳动物熬过了大灭绝？胎盘赋予了真兽类怎样的优势？新生代开始后，为何是哺乳动物最终成为了陆地生态系统的主导者？听听本系列的最终章是怎么说的。
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