In the remote reaches of Arizona s Petrified Forest National Park, scientists have unearthed North America's oldest known pterosaur a small, gull-sized flier that once soared above Triassic ecosystems ...

Consider adding a few detours, like Petrified Forest National Park. Your adventure starts in Tucson, and can end in Flagstaff or Las Vegas—both major Southwest transit hubs. 2+ nights | Baja Sur, ...