A 2023 astronaut photo shows three dark hills, or mesas, towering above part of the Sahara desert in southern Mauritania. The ...

A study reveals that Earth alternated between chaotic and calm climates during the Paleozoic era, driven by tectonics and ...

Located approximately 8 miles northwest of Guérou in southern Mauritania, these black mesas rise steeply from the surrounding plains, reaching heights of 1,000 to 1,300 feet. Composed of sandstone, ...

The Paleozoic Era, which ran from 541 million to 251.9 million years ago, was a time of great change on Earth. The era began with the breakup of one supercontinent and the formation of another. Plants ...

Imagine a giant millipede crawling along the jungle floor with a leggy, eight-foot-long body. Next, consider an oversized dragonfly that can stretch its wings to an incredible 28 inches across. This ...

Representatives of several genera of late Paleozoic Caenogastropoda have been studied based on exceptionally well-preserved material from the latest Permian of south China, the Pennsylvanian of the ...

In what likely is the first study on the evolution of dietary preferences across the animal kingdom, researchers report several unexpected discoveries, including that the first animal likely was a ...

Shelled sea creatures were relatively free of predators 250 million years ago. But geological scientists have discovered a tiny ancient brachiopod that was drilled by predators at rates similar to ...