Stromatolite

Definition

Stromatolites are layered sedimentary formations created by the growth of cyanobacteria. They are among the oldest evidence of life on Earth, dating back over 3.5 billion years.

5 Must Know Facts For Your Next Test

1. Stromatolites are primarily formed by the activity of prokaryotic cyanobacteria.
2. They play a significant role in our understanding of early microbial life and Earth's history.
3. Modern stromatolites can still be found in limited environments like Shark Bay, Australia.
4. The layers in stromatolites are created as cyanobacteria trap and bind sediment particles.
5. They contributed to the increase of oxygen in Earth's atmosphere through photosynthesis.

Related terms

Cyanobacteria:

Photosynthetic bacteria that play a crucial role in the formation of stromatolites.

Sedimentary Rocks: Types of rocks formed by the accumulation or deposition of mineral or organic particles at Earth's surface.

Photosynthesis: The process used by cyanobacteria and other organisms to convert light energy into chemical energy.