Navigation:Geological Time Periods/Proterozoic Eon/Mesoproterozoic Era

Calymmian Period
1600-1400 MYA

Prokaryotes

 * Stromatolites

Eukaryotes

 * Acritarchs
 * Algae

Ectasian Period
1400-1200 MYA

Prokaryotes

 * Stromatolites

Eukaryotes

 * Acritarchs
 * Red algae

Stenian Period
1200-1000 MYA

Prokaryotes

 * Stromatolites

Eukaryotes

 * Possible Excavates