Earth’s history spans 4.5 billion years, and throughout this vast timeline, our planet has been home to creatures so strange they seem ripped from the pages of science fiction. From ancient seas ...

Add Yahoo as a preferred source to see more of our stories on Google. This November 2023 photo provided by Gaorong Li shows a Haootia-like fossil at Yunnan University in Kunming, China. (Gaorong Li ...