16th -17th century
In plate tectonics as in everything, the period before human history is the prehistoric period. Since plate tectonics have been going on since about the beginning of the planet, this is a very long period indeed, compared to which the historic period is insignificant.
It was when Pharaohs did infact not exist in this time of history
It lasted 3100-3000BC.
A pre-historic beast is an animal that was gone long before our time. Pre-history means before written history.
it does not have one
40 weeks from the last period.
Scientists guessed that the prehistoric anaconda was around 40 ft long.
open range period last from the 1860s to 1880s.
A " period in history" means that the time time is prolonged. I t is a long time. I know this because I learned it at school
The Red Sea has existed for a long time. Many things have happened there, both in human history and prehistoric times.
Tortoises have been known since prehistoric times, so their first discoverer has long been lost to history.
10 centuries