Sign In
Subscribe
By Natural Philosopher Michael Alan Prestwood
By Natural Philosopher Michael Alan Prestwood
Sign In
Subscribe
Science    Philosophy  •  Critical Thinking  •  History    Politics  •  RW  •  AI  •  Physics  •  Evolution  •  Astronomy

TIMELINE STORY

Oldest Known Fossil-Microorganisms

When: 3.42 Billion BCE
Note: 3.42 to 3.7 Billion BCE
From Year 0 (BCE/CE): -3420000000
Share :
Email
Print

Oldest Known Fossil-Microorganisms

micro organisms cells background
micro organisms cells background

Oldest Known Fossil-Microorganisms

The earliest known life on Earth are fossilized microorganisms found in hydrothermal vent precipitates. Currently dated to about 3.42 billion BCE. These microorganisms were prokaryote cells. Single celled organisms with no nucleus and had early simple DNA. More complex DNA in a nucleus evolved about 1.5 billion years later in Eukaryotic cells, circa 2 billion BCE.

  • Domain: Bacteria or Archaea > Kingdom: Various
Share this on...

More Timeline Stories...

WWB Season 7 — Returning 2026!

I’m taking this time to catch up with the paired videos for recent WWB editions, and to restructure the WWB into seasions of 10 weeks: four 1-Minute Hot Topics. Each week featureing a tidbit in science, philosophy, critical, thinking, and history. Follow the TST YouTube channel to catch all new videos. –Mike

Weekly Wisdom Builder 
December 3, 2025 Edition
February 26, 2025 Edition
Time Left: 

Subscribe!

It’s Free! No ads! No catches! One email each Thursday.

Exactly what the world needs RIGHT NOW!
Wisdom at the crossroads of knowledge.

Wisdom emerges from the consistent exploration of the intersections of philosophy, science, critical thinking, and history.

NEW BOOK! NOW AVAILABLE!!

30 Philosophers: A New Look at Timeless Ideas

by Michael Alan Prestwood
The story of the history of our best ideas!
Scroll to Top