Spiders, crabs, and other arthropods evolved from a group of animals that underwent a burst of diversity around 500 million ...

High in Canada’s Rocky Mountains, the animals of an ancient ecosystem can be seen battling for life. The fossils of the Burgess Shale offer a glimpse at the incredible diversity of early life on ...

There in the Burgess Shale, we could see the cousins of the creatures that gave rise to all animals, including those with backbones like us. These variations on an ancient theme help us understand ...

Emu Bay Shale fossils are associated with the Cambrian Explosion, which marked a massive jump in animal evolution over 500 ...