

End of Dinosaur Epoch


Fossils of a giant new species –the Tyrannosaurus rex of the Cambrian–a long-extinct group of sea creatures called trilobites have been found on Kangaroo Island, South Australia. Around 540 million years ago, the most important moment in the history of evolution, the Cambrian Explosion, the spectacular supernova of biology, detonated, and the world of animal life—creatures that move around and eat other organisms for a living—was born.