cambrian explosion

A trove of late Ediacaran fossils in Yunnan province reveals bilaterians, deuterostomes, and comb jellies existed at least four million years before the Cambrian explosion, reshaping the timeline of animal evolution.

A fossil assemblage preserved as carbonaceous films in Yunnan Province reveals more than 700 specimens of complex animals, including the oldest known deuterostomes, dating to 554-539 million years ago and closing a major gap between the Ediacaran period and the Cambrian explosion.