Antarctica, as we know it today, is located at the south pole. However, it was not always there or so cold! Around 500 million years ago, during the Cambrian period, Antarctica was actually closer during Earth's equator! Due to continental drift, Antarctica was attached to Australia and shifted more to the south during the time of the dinosaurs. The first fossils found were of marine reptiles called plesiosaurs. They were found on Seymour Island in 1982. The first dinosaur fossil found was of an ankylosaur. It was found on James Ross Island in 1986.