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 ...

Paleontologists have found extensive fossil records showing the extent of this catastrophe. Many marine creatures like ammonoids and conodonts went extinct, as well as land animals like phytosaurs, ...

Dinosaurs may be long extinct, but 2025 made it abundantly clear that they’re anything but settled science. Over the past year, new fossils, reanalyses of famous specimens and the use of increasingly ...

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 ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. Nearly 600 California red-legged frog ...