ScienceDaily

A 236-million-year-old fossil could rewrite the story of mammalian birth

Scientists may have uncovered evidence that a mammal ancestor was giving birth to live young 236 million years ago. A fossilized cynodont showed a neonatal growth line and an unusually large birth size that closely match patterns seen in modern mammals. The discovery could push the evolution of live birth back by up to 95 million years. It also raises the possibility that many supposedly “modern” mammalian traits evolved surprisingly early.

作者 ScienceDaily

1 分钟阅读

有活动行业的新闻要分享吗?

提交新闻稿或信息,触达数千名活动行业专业人士。

联系我们→

更多Environmental & Earth Sciences相关内容

相关洞察