oct 24, 1000000000 BC - first Cyanobacteria (blue green algae)

Description:

-First cyanobacteria (1.6 billion years ago)
-not algae at all
-present in many lakes (present time 2018)
-could be toxic
(image)

Source:
http://math.ucr.edu/home/baez/timeline.html
https://www.sciencemag.org/news/2001/08/land-plants-history-rewritten
http://www.ucmp.berkeley.edu/bacteria/cyanointro.html

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