The middle Cambrian period is one of the most spectacular evolutionary events in the history of life on Earth. Within a short time frame, a host of animals appeared in the fossil record. The fossil record consists mostly of hard body parts while soft tissues are generally not well preserved except at exceptional sites such as the world-famous Burgess Shale. This illustrated guide immerses the reader in the history, geology, environment and, most importantly, fossils of the Burgess Shale in an easy-to-read, concise summary of life as it was over 500 million years ago. Excellent colour images of 3D interpretations of the organisms and photos of the fossils make this resource a must have for anyone interested in the Burgess Shale.