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Era

Tonian

Proterozoic

The first period of the Neoproterozoic era, spanning 1 billion to about 720 million years ago. The supercontinent Rodinia remained stable through the early Tonian before beginning to fragment around 750 million years ago, and the period's rock record includes possible early sponge-like fossils and a major radiation of single-celled acritarchs. 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
Rank
Period 1
Start (Million Years Ago)
1000 1
End (Million Years Ago)
720 1
Key Event
The supercontinent Rodinia remained stable through the early Tonian, 1000-900 Ma, before beginning to fragment around 750 Ma. 1
Connections

Has Geologic Rank

Geologic Period, Concepts

In Discipline

Geochronology, Disciplines

Precursor To

Cryogenian, Eras
Sources
1. Tonian (Wikipedia)
Wikimedia Foundation
  • Lead section
    It lasted from 1000 to 720 Mya
  • Article text
    Both the Supercontinent Rodinia and the Mirovian superocean remained stable throughout the early Tonian from 1000 to at least 900 Mya.
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