Around 30 million years ago, a heavily built animal prowled the area that is now Vallbona de les Monges, in Lleida province (Catalonia, northeastern Spain). It had a long head, prominent cheekbones and formidable jaws lined with large, sharp teeth. Paleontologists call it the hell pig. The nickname misleads. Its kinship with modern pigs is […]

In 2016, paleontologist David DeMar Jr. was crawling across a rocky outcrop in northeastern Montana, hunting for fish fossils, when he spotted a dark, reddish-brown nodule about half the size of a golf ball. He picked it up and looked at it through his hand lens. On its surface was something he didn’t expect: a […]

Before 2025, paleontologists had confirmed exactly two footprints anywhere in the world made by an adult Tyrannosaurus rex — one in New Mexico, one in Montana. Isolated prints, each capturing a single instant, with no way to tell how the animal that made them actually moved. That changed with a discovery in the badlands of […]