by Sarah Fecht, Popular Science
SAY HELLO TO GREAT-GREAT-GREAT-GREAT … GRANDPA
In a paper in Nature, scientists claim to have found humanity’s oldest known ancestor. This horrifying, bag-like sea creature lived about 540 million years ago and was recently dug up in China.
Technically, the oldest known fossils go way farther back, to about 3.5 billion years. But those were cyanobacteria, and although we’re related to them, those photosynthetic creatures are on a different branch of Earth’s family tree. Continue reading This Ghastly Sack of Cells may be your Distant Ancestor