Fossils found in these layers include fern ... and sponges. Known as the Grand Canyon Supergroup, these layers of rock lie at an angle relative to the layers of rock above. The layer labeled ...

From ancient fossils and human artifacts to geological formations, here are some of the most incredible discoveries ever made in the Grand Canyon National Park. Each one of these discoveries ...

Photos of the fossil — yes, it’s assumed to be a ... lake at the base of the Grand Wash cliffs right when the Grand Canyon started to form.” Response to the post has been muted, but some ...

Petrified Forest National Park rivals the Grand Canyon with its unique fossils, expansive vistas, and rich geological history. Most people looking to see the U.S.'s top national parks expect ...