- Tip: Navigate with your left and right arrow keys1Age: 3.5 billion years old
The oldest known cyanobacteria fossils were found on Archaean rocks of western Australia. Cyanobacteria, or blue-green algae, is a type of bacteria that uses photosynthesis to create energy. It is believed that this played a role in oxidizing the earth's atmosphere, making the planet more suitable for life as we know it.l< << PREV 1 of 10 NEXT >>
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