Era Paleoarchean Era

Time runs left (older) → right (younger) · Hover a card for details

First stromatolites; oldest microfossils (3600-3200 Ma).

3.60 Ga – 3.20 Ga · 400.00 Ma duration

Axis labels in Ma (millions of years ago) · Click a card for details

Paleoarchean Era 1

3500 Ma First Stromatolites Photosynthetic mats appear Layered structures built by cyanobacterial mats — oldest confirmed photosynthetic life, found in Pilbara, Australia.