Precambrian Eon
4.6 - 541 M 4.059
Proterozoic Eon
2.5 - 541 M 2,047,000,000
Mesoproterozoic Era
1.6 B - 1B
Stenian Period
1.2B - 1B 200 |
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Precambrian Eon
4.6 - 541 M 4.059
Proterozoic Eon
2.5 - 541 M 2,047,000,000
Mesoproterozoic Era
1.6 B - 1B
Stenian Period
1.2B - 1B 200
| 1.1-.9 - 750–633 308 Rodinia begins to break up into N & S. |
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Precambrian Eon
4.6 - 541 M 4.059
Proterozoic Eon
2.5 - 541 M 2,047,000,000
Mesoproterozoic Era
1.6 B - 1B
Stenian Period
1.2B - 1B 200
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Precambrian Eon
4.6 - 541 M 4.059
Proterozoic Eon
2.5 - 541 M 2,047,000,000
Neoproterozoic Era
1B - 541 659
Tonian Period
1B - 720 280
| 1.02 Enchanted Rock pink granite mountain  Llano Uplift |
| 1.082 Spy Rock is a pink granite dome located in the Llano Uplift in Mason County, Texas, |
| 1 - 0 Midcontinent Rift System N America |
  1 Cyclomedusa davidii, worldwide |
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Precambrian Eon
4.6 - 541 M 4.059
Proterozoic Eon
2.5 - 541 M 2,047,000,000
Neoproterozoic Era
1B - 541 659
Tonian Period
1B - 720 280
| 950 - 0 Choanozoa opisthokont eukaryotes including choanoflagellates & animals |
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