Paleontologists have discovered the microscopic fossilized remains of green seaweed near Dalian in the Liaoning province of northern China. The microfossils are approximately one billion years old. They represent a previously unknown species of green seaweed, named Proterocladus antiquus, and are barely visible to the naked eyed at 2 mm in length, or roughly the size of a typical flea. Proterocladus antiquus. Image credit: Virginia Tech. “These...
