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Eras

Tonian

Proterozoic

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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.

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
Cross-Tradition Connections

In Discipline

Part Of

Neoproterozoic, Eras

Precursor To

Cryogenian, Eras
Sources
1. Tonian (Wikipedia)
Wikimedia FoundationLead section
Quote, Lead section
It lasted from 1000 to 720 Mya
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1. Tonian (Wikipedia)
Wikimedia FoundationRodinia section
Quote, Rodinia section
The supercontinent Rodinia remained stable through the early Tonian, 1000-900 Ma, before beginning to fragment around 750 Ma.
View the Source
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