However, we have independantly proved the Pangaea theory.
"Additional evidence for Pangaea is found in the geology of adjacent continents, including matching geological trends between the eastern coast of South America and the western coast of Africa.
The polar ice cap of the Carboniferous Period covered the southern end of Pangaea. Glacial deposits, specifically till, of the same age and structure are found on many separate continents which would have been together in the continent of Pangaea.[7]
Apparent polar wandering paths also support the theory of a super-continent. Geologists can determine the movement of continental plates by examining the orientation of magnetic minerals in rocks; when rocks are formed, they take on the magnetic properties of the Earth and indicate in which direction the poles lie relative to the rock. Because we know that the poles do not move more than a few degrees, magnetic anomalies in rocks can only be explained by the drifting of continents.[citation needed]
The continuity of mountain chains also provide evidence for Pangea. One example of this is the Appalachian Mountains chain which extends from the northeastern United States to the Caledonides of Ireland, Britain, Greenland, and Scandinavia.[8]"
From wikipedia.