Stenian Period

The Stenian Period is the final geological period in the Mesoproterozoic Era, stretching from 1200 Mya to 1000 Mya. During the Stenian Period, the supercontinent Rodinia assembled.

Adjacent Periods
The Stenian Period was preceded by the Ectasian Period, and succeeded by the Tonian Period of the Neoproterozoic Era.