The third and final era of the Proterozoic eon, spanning 1 billion to 538.8 million years ago and closing the Proterozoic. It includes the Cryogenian's severe Snowball Earth glaciations and the Ediacaran's rise of the Ediacaran biota, the first widespread fossil evidence of complex multicellular animal life, setting the stage for the Cambrian explosion. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/
Facts
Start (Million Years Ago) End (Million Years Ago) Key EventThe earliest fossil evidence of metazoan radiation are found in the Ediacaran period, which included the namesaked Ediacaran biota. 1 Connections
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1. Neoproterozoic (Wikipedia)
Wikimedia FoundationLead section
spanning from 1 billion to 538.8 million years ago
Lead section
The earliest fossils of complex life are found in the Tonian period in the form of Otavia, a primitive sponge, and the earliest fossil evidence of metazoan radiation are found in the Ediacaran period, which included the namesaked Ediacaran biota as well as the oldest definitive cnidarians and bilaterians in the fossil record.
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