More than half a billion years ago, the Grand Canyon was not the arid landscape we know today but a shallow, tropical sea ...

Paleontologists unearthed fossils in the Grand Canyon dating back more than 500 million years that offer a new look into a time when complex life emerged on Earth.

During the Cambrian, the shallow sea covering the Grand Canyon was especially oxygen-rich thanks to its perfect, “Goldilocks” depth, said Mussini, a doctoral student in Earth sciences at the ...

Paleontologists unearthed fossils in the Grand Canyon dating back more than 500 million years that offer a new look into a time when complex life emerged on Earth.

The fossils date back to the Cambrian Explosion around half a billion years ago when animal life was evolving in new ways. Within the walls of the Grand Canyon, researchers have discovered ...

Trove of Fossils Uncovered in the Grand Canyon Offers a Rare Glimpse Into Cambrian Life, With Toothy Worms and Slug-Like Mollusks Rocks found along the Colorado River in Arizona turned out to ...

A newly discovered species of priapulids was widespread during the Cambrian but is nearly extinct today. Researchers named this new animal discovered in the Grand Canyon Kraytdraco spectatus ...

So why did evolution seem to pause? We break down the latest theories,from nutrient limitations to tectonic calm,and reveal how this time laid the groundwork for the Cambrian explosion.

2. Life Was in the Oceans and It Was Strange If you walked to the edge of the sea, you would witness one of the most exciting periods in Earth’s history, the Cambrian Explosion.

Three people inside a Nebraska manufacturing building that partially collapsed in an explosion Tuesday evening remained missing as authorities tried to reach them.

A day at the docks turned dangerous on Saturday as a boat exploded at the Miss Croix Yacht Harbor fuel dock in Prescott, Wisconsin.

An independent federal board has launched an investigation into the fatal explosion at Horizon Biofuels.