But so far, not a single trace of dinosaur remains has been found in ... which led the Alvarezs to conclude that the mass extinction was caused by an extraterrestrial object.

The new dinosaur was uncovered by Museo Paleontológico Egidio Feruglio paleontologist and National Geographic Explorer ... changed as a result of that mass extinction event.

Studying the new species and others could help paleontologists understand how biodiversity changed as the world approached the end of the dinosaur ... The nonprofit National Geographic Society ...

Like T. rex and some modern sloths, this strange 90 million year old dinosaur had two fingers on each hand. An illustration shows what Duonychus tsogtbaatari might have looked like. Unlike its ...

Deep in the heart of Odzala-Kokoua National Park, Selah Abong’o froze, convinced she was about to encounter something out of legend: a mokele-mbembe, Congo’s mythical dinosaur. In 2003 ...

Sul Ross State University geology students discovered a large vertebra of an Alamosaurus in Big Bend National Park. The Alamosaurus is the largest known land dinosaur in North America. Big Bend ...

Sul Ross students and professors collect a fossil from a giant dinosaur at a Texas national park. Photo from Sul Ross State University. A fossil from one of the largest dinosaurs to live in North ...