Petrified Forest’s chief paleontologist Bill Parker excavates bones from a hill. Bill Parker / NPS Among the fossils found at the park is this tooth of a Kraterokheirodon. John Burcham The area ...

Paleontologists unveil a new reptile at Petrified Forest National Park. Elizabeth Parker and her Girl Scout troop clustered around her dad Bill Parker, then Petrified Forest’s lead paleontologist, as ...