the extinction of the dinosuars
from the day it ended.
Devonian Period
The period of National Harmony ended because of "Regional Differences." - KK
The Nara period began
The Permian Period was ended by the Permian/Triassic Extinction Event, which wiped out 90% of the species on Earth at that time.
ended with the Soviet invasion of Afghanistan.
Dutch period in Ceylon ended in 1796.
Hebrew never ended. It is still around today.
Ordovician period
Usually ended, but everyone's cycle is different so it may be more days than that.
You put a period at the end of the sentence to indicate that the sentence has ended.
You can