Beneath the towering Guadalupe Mountains of Texas lies a dramatic story of transformation. Once part of an ancient sea, the ...

That's difficult—sediments containing fossils from the end of the ... see the terrestrial realm's transition from the Permian to the Triassic period." We ascended through sheep-ranching country ...

Therapsids, the ancient relatives of mammals, once roamed Earth in great numbers during the middle to late Permian period.

Fossils discovered in Russia and South Africa ... Africa shows the dynamic nature of prehistoric ecosystems. As the Permian period drew to a close, many top predators in southern regions went ...

The fossil seems to date back toward the end of the Carboniferous period and into the Permian period, which took place about 300 million years ago, Calder told the news agency. Those time periods ...

During the Permian Period, there was massive global warming ... it so that trilobites are some of the most perfectly ...

The Permian-Triassic extinction eliminated almost 90 percent of all species. The devastating loss came after violent volcanic ...

For years, a mysterious fossil specimen defied categorization, until one paleontologist made a surprising discovery.

Permian Resources focuses on liquid fossil fuel development in the Delaware Basin. See why I rate PR stock a strong buy.