Tyrannosaurs lived in the Southern Hemisphere, too

Paleontologists digging in Australia's aptly named Dinosaur Cove have unearthed the first known fossils of a tyrannosaur from the Southern Hemisphere. The Fossils include the remains of just one 30-centimeter-long bone from the creature's pelvic girdle, but certain features of that bone are seen only in tyrannosaurs, says Roger B.J. Benson and his colleagues report in the March 26 Science. Previously, all known fossils of the tyrannosaur lineage have been unearthed in the Northern Hemisphere.

So basicly their saying that the fossil found in the southern part of Australia is a dinosaur that we thought only roamed in the Northern Hemisphere, which means that pangaea really did exists. I thought this was very interesting because this is just another answer to the possibility that there really was a supercontinent.