The maps are actually backwards in the timeline. They go from current to past in the order they are in. I wont go into HUGE detail but the maps are showing movement of the rock due to tectonic activity during those eras in time of the planet. During each period of time the movement of the continents to their current location and placement on the planet was going on.
Paleozoic era ( 542 - 251 million years ago ) the land masses were broken up from a supper continent into smaller land masses then by the end of the era they had connected again.
Mesozoic era ( 251 - 65 million years ago ) the super continent splits into a northern and southern half. Then by the end of the era the land masses split into what is now the diferrent continents that we know today. Northern becoming North America and Euroasia and the Southern becoming South America, Africa, Australia, Antarctica, and Indian subcontinent which is what collided with the Asian plate during the Cenozoic (the next period), the impact giving rise to the Himalayas.
Cenozoic era ( 65 million - present ) is mainly the final positioning of the continents. Not much happened in terms of tectonic movement but it is what we have today.
This is of course the belief of the scholars and historians. You take it for what you will.