Public Timelines

For companies For educational institutions For teachers For students Dashboard

For educational institutions For teachers For students Dashboard

Create a timeline

Public timelines

About & Feedback Terms Privacy FAQ

Dashboard Get premium

Donate

jan 1, 280000000 BC - Oxygen Levels Highest

Description:

Rough estimate

Oxygen levels almost 50% higher than present, at almost 30% of the atmosphere.

Added to timeline:

History of Life on Earth

ByMatthew Pedowitz

10 Oct 2020

0

0

445

Date:

jan 1, 280000000 BC

Now

~ 5883516 years ago

About & Feedback Terms Privacy FAQ

Dashboard Get premium

Donate

The service accepts bank transfer (ACH, Wire) or cards (Visa, MasterCard, etc). Processed by Stripe.

Secured with SSL