Mesoproterozoic Era

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Table 4: Geologic time scale. To see more information about a period, select one from the chart.

Proterozoic Eon

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Mesoproterozoic Era

geochronology

Also known as: Middle Proterozoic Era

Learn about this topic in these articles:

atmosphere

In Precambrian: Microfossils and stromatolites
…increasingly oxygen-rich atmosphere of the early Proterozoic (the Proterozoic Eon extended from 2.5 billion to 541 million years ago). The eukaryotes were capable of cell division, which allowed DNA (deoxyribonucleic acid), the genetic coding material, to be passed on to succeeding generations.
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