When the big asteroid hit Mexico 66 million years ago, it set off wildfires, tsunamis and massive clouds of dust that darkened the skies, killed much of Earth’s plant life and triggered a chain of ...

A groundbreaking study has revealed that dinosaurs in New Mexico were thriving right up until the asteroid impact that led to their extinction. This challenges previous theories suggesting a gradual ...

Dinosaurs' extinction "re-engineered" Earth's surface, according to new research. The reptiles had such an "immense" impact on the planet that their sudden exit led to wide-scale changes in landscapes ...

A site in the San Juan Basin of northwestern New Mexico is providing a rare glimpse into the last days of the dinosaurs. Rocks and fossils at the Naashoibito Member site show an ecosystem that was ...

Named for its razor-like teeth, Novaculadon mirabilis came from a rodent-like order that outlived the dinosaur extinction before vanishing about 30 million years ago. By Sara Novak Around 145 million ...

A trove of specimens from New Mexico may help settle a long-running argument about the diversity of dinosaurs before their extinction. A life reconstruction of Alamosaurus sanjuanensis, from the ...

Human activity may be triggering the greatest extinction event since the asteroid impact that wiped out the dinosaurs, according to scientists. Their study, based on a review of decades of research on ...

Dinosaurs appear to have been thriving before a giant asteroid hit the Earth 66 million years ago, paleontologists working in New Mexico said Thursday in the journal Science. Experts have long debated ...

Tens of millions of years ago, an apex predator resembling a giant crocodile stalked the humid freshwater floodplains of southern Patagonia. Measuring up to 11.5 feet (3.5 meters) long and weighing ...

Dinosaurs had such an immense impact on Earth that their sudden extinction led to wide-scale changes in landscapes—including the shape of rivers—and these changes are reflected in the geologic record, ...

The researchers began to suspect changes in geology was somehow related to the mass extinction of dinosaurs - called the Cretaceous-Paleogene, or K-Pg, mass extinction. They started to examine what ...