The terminal era of the Proterozoic Aeon, lasting from 1000–541 million years ago. It includes the Tonian (1000–720 million years ago), Cryogenian (720–635 million years ago) and Ediacaran (635–541 million years ago) periods.
The terminal era of the Proterozoic Aeon, lasting from 1000–541 million years ago. It includes the Tonian (1000–720 million years ago), Cryogenian (720–635 million years ago) and Ediacaran (635–541 million years ago) periods.