A book by the man who dicovered Pangaea that you could check out is The Origin Of Continents And Oceans-by Alfred Wegener
General Info
Where: Earth
When: Over 200 million years ago.
Why: Tectonic Plates moved and split the supercontinent that soon moved to thier present day positions.
(movment of the continents, right)
Impact On Environment
When the continents split the animals to rome on.
Some land moved near to the Equator and got warmer. Or they, like Antarctica, moved to the bottem of the earth an got colder. So where ever parts of the land went plants and animals had to adapt.