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A fossil site in southwest China reveals that complex animals evolved before the Cambrian period even started — pushing the timeline back by millions of years

For more than a century, the Cambrian explosion has served as biology’s big bang: the moment, roughly 538.8 million years ago ...
Morning Overview on MSN

Ediacaran fossils from 554 million years ago reveal animals once thought to appear only in the Cambrian

In a hillside in Yunnan province, southwest China, paleontologists have pulled more than 700 fossils from rock that is roughly 554 million years old. The collection, known as the Jiangchuan Biota, ...