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History Timeline Flashcards

Topic:
Bacteria
Timeless ideas at the intersections of science, philosophy, critical thinking, and history.

A simple question, when?

Born, discovered, when did or will it, etc.

Great Oxidation Event: Third Atmosphere

~2.4 Billion Years Ago

Cause: Cyanobacteria Produce Oxygen
Bacteria Story 
Evolution.

Blue-Green Bacteria (Not Algae)

2.65 Billion years ago (+/- 50 million years)

Bacteria Story 
Bacteria Evolution.

Mesozoic Era: Age of Dinosaurs

From 251.902 to 66.0 million years ago.

186 Million years: Dinosauria reigned from extinction to extinction.
Bacteria Story 
Evolution.

The K-Pg Extinction

66.04 million years ago (+/- 900 years).

Cause: Massive Meteor
Bacteria Story 
Evolution.
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