Template:Ordovician graphical timeline
From Wikipedia, the free encyclopedia
Key events in the Ordovician
-490 —
–
-485 —
–
-480 —
–
-475 —
–
-470 —
–
-465 —
–
-460 —
–
-455 —
–
-450 —
–
-445 —
–
Key events of the Ordovician period.
Left: ICS approved stages.
Right: "General" stages.
Axis scale: millions of years ago.
Left: ICS approved stages.
Right: "General" stages.
Axis scale: millions of years ago.

