Resumen de Sparks of life
Holmes investigates the Marble Canyon which was discovered just two years ago. It is part of the famous Burgess Shale, perhaps the richest source of information about early animal life on Earth. The tale the shale tells is one of a sudden, dramatic burst of animal diversification known as the Cambrian explosion, evolution's equivalent of the Italian Renaissance. These creatures are so bizarre-looking that 25 years ago, paleontologist Stephen Jay Gould argued in his book Wonderful Life that they represent a failed experiment that left few descendants in today's world. Since then, most of the Burgess fauna have been recognized as members of modern animal groups.
