Were the dinosaurs around when Gondwana broke up?
The break up of Gondwana began during the time that Dinosaurs were the dominant land animals (in the Cretaceous – 120 million years ago), but it was such a slow process that they were unlikely to be affected by it. Continents break up and move apart at about the same speed you fingernails grow at (about 6 cm per year in the case of Australia and Antarctica breaking apart); by the time Australia had completely broken away from Antarctica, all dinosaurs (except birds) were extinct.
