Everyone knows that dinosaurs are extinct, and most people have some idea about how it might have occurred. But the exact periods in history when it happened are less well known. Was it a single ...

Around 66 million years ago, Earth endured a mass extinction event that marked the end of the Cretaceous and the start of the Paleogene period. Roughly 75% of all species vanished, including every non ...

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 ...

Since the beginning of time, Earth has created life and then wiped out most of it in catastrophic, ultra-destructive moments.

For a long time, the prevailing theory was that dinosaurs were already in decline before the Chicxulub asteroid struck Earth ...

Some 215 million years ago in what is now northwestern Argentina, the terrestrial crocodylomorph Hemiprotosuchus leali prepares to devour the early mammal relative Chaliminia musteloides. “Lots of ...

Most people think of crocodilians as living fossils—stubbornly unchanged, prehistoric relics that have ruled the world's swampiest corners for millions of years. But their evolutionary history tells a ...

The Nature Index 2025 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...

This lineage was widespread and abundant in the Late Cretaceous, but just a few species survive today off the coasts of Australia. If you’re an animal living through a mass extinction, it’s best to be ...

ANN ARBOR—Shortly after an asteroid slammed into Earth 66 million years ago, life for non-avian dinosaurs ended, but the evolutionary story for the early ancestors of birds began. The fossil record ...