Often overshadowed by the more data-rich Phanerozoic Eon, this period was characterized by critical evolutionary, environmental, and tectonic changes. However, the fossil record of Proterozoic ...

Single-celled algae called acritarchs and the Ediacaran animals vanish from the fossil record at the end of the Vendian, the period that closes the Proterozoic era. If they were wiped out by an ...