"This is our planet...530 million years ago. Nothing yet lives on land...but in the ocean, its a different story."
The Cambrian time period was the first time period in the Palaeozoic era - the first time period when life existed on the planet. It lasted on average from 570 MYA to 490 MYA.
During the Cambrian period, nothing had yet lived on land at this time, but under the ocean was a different story. Life had already been evolving for millions of years at a slow but steady pace. The seas were mostly full of simply, soft-bodied creatures that were blindly drifting in the currents. However, in the coastal shallows below, evolution had stepped on the accelerator and predators had begun to take their first bite.
The list of animals during the Cambrian: