- And from this one common ancestor,
从这一共同祖先开始 - all mammals, reptiles, birds,
所有哺乳动物、爬行动物、鸟类 - and dinosaurs would descend.
以及恐龙都将发展而来 - Sixty million years after the evolution of the amniotic egg,
进化出蛋之后6000万年 - amniotes have spread across Pangaea...
羊膜动物已遍布盘♥古♥大♥陆♥ - ...producing two new dynasties
形成两个新的王朝 - and the start of an endless rivalry.
无尽的竞争也由此开始