Precambrian is BEFORE the Cambrian period!
stromatolites
Precambrian Era.
The Archean Eon, which is part of the Precambrian period along with the Proterozoic Eon.
It is called a continental shield.
Precambrian, Paleozoic, Mesozoic and Cenozoic.
stromatolites
Precambrian Era.
The atmosphere, during the Precambrian became richer in oxygen caused by a bacteria called cyanobacteria.
It is called the Precambrian.
stromatolites
The Archean Eon, which is part of the Precambrian period along with the Proterozoic Eon.
During the precambrian.
stromatolites
eras.
stromatolites
**Precambrian**
It is called a continental shield.