Only by understanding the regional geological and tectonic evolution of an area can you determine the location and timing of rifting, subduction, continental collision and other major plate tectonic events.
Some paleogeographic features change very slowly and are easy to map.
The study of paleogeography has two principle goals.
It is warm near the Equator and cool near the Poles.
Other paleogeographic features change very rapidly and, therefore, any map, at best, is an approximation.