The Mesozoic came to an abrupt end 66 million years ago in a dramatic extinction event. An estimated 70 per cent of plant and animal species perished.
One of the theories is that the mass extinction happened suddenly due to a meteorite impact. Place your hand onto an iron meteorite which was found in the Northern Territory. It is about the size of a loaf of bread; weighs 31kg and coloured mottled grey and terracotta The surface of the meteorite has indents like large thumb prints.