Statherian

The Statherian Period ( /stəˈθɪəriən/; Greek: σταθερός (statherós), meaning "stable, firm") is the final geologic period in the Paleoproterozoic Era and lasted from 1800 Mya to 1600 Mya (million years ago). Instead of being based on stratigraphy, these dates are defined chronometrically.[1][2]

Statherian Period 1800–1600 million years ago PreЄ Є O S D C P T J K Pg N

Paleoglobe of the Earth during the Statherian

Events of the Statherian -1800 — – -1780 — – -1760 — – -1740 — – -1720 — – -1700 — – -1680 — – -1660 — – -1640 — – -1620 — – -1600 — – P a l e o p r o t e r o z o i c M P Z Orosirian Statherian Calymmian       ← Beginning of the Boring Billion Events of the Statherian Period. Axis scale: millions of years ago.

The period was characterized on most continents by either new platforms or final cratonization of fold belts. Oxygen levels were 10% to 20% of current values.[3]

Rafatazmia, controversially[4] claimed to be present in Statherian beds in India, may be the oldest known confirmably eukaryotic fossil organism.[5]

By the beginning of the Statherian, the supercontinent Columbia had assembled.