Looking for fossils in Petrified Forest National Park can be a bit like gambling. When splitting rocks in the badlands of the Painted Desert of northern Arizona there’s often nothing inside. Occasionally, though, “you might win big and find something new to science,” says Adam Marsh, lead paleontologist at the park. Paleontologists have come up lucky recently, with the discovery of a number of new species in the area. These now-extinct amphibians, reptiles, and early mammal relatives provide a unique window into the biodiversity of the period in geologic history…
