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 ...

During the Permian-Triassic extinction, Inostrancevia, a saber-toothed predator, emerged as a dominant force. Fossils ...

Imagine plunging into the ancient seas, only to come face to face with a creature so bizarre, it almost defies belief.

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

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 ...

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

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

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