A treasure trove of exceptionally preserved early animals from more than half a billion years ago has been discovered in the ...

Rocks gathered along the Colorado River contained evidence of a bustling community of animals in an ancient sea.

Paleontologists named the worm Kraytdraco spectatus, for its resemblance to a Star Wars monster. They say it sheds light on ...

Located more than 200 feet below the surface near Peach Springs, the Grand Canyon Caverns and Inn offers visitors a rare ...