I found 90 interresting textures for the Paleolithic Earth. Each of these textures corresponds to a period of the life of the Earth. All definitions are in a single ssc file defining Altsurface. The sources are in the ssc file
I had to rename some images that did not reflect the real name of the period and specified the period.
I appreciated the precision of the images especially with the reminder of the current borders which makes it possible to find the evolution of the countries.