Anything studied and considered before mankind's written history is called simply, prehistoric,. If one examines our written hisstory, it does not go back more than seven thousand years, as far as I understand.
The geologic column, that is to say, the time scale calculated by geoligists by means of stratigraphy, fossiliferous rocks, velocity of tectonic drift and more does date this old world in the mllions of years, but there are so manhy gaps in informattion used that it is all still theoretical.
I understand the geologic column, but my reason combined with faith tell me I should always go to the Word of God for truth. God bless you.