The extinction of the largest dinosaurs to walk the Earth may have played a critical role in creating an environment that ...

Everyone knows what a bird is – and pretty much everyone knows what a dinosaur is. But not everyone is aware that birds evolved from dinosaurs approximately 160 million years ago. In fact, birds and ...

A small but fierce jawbone sits in Argentina’s natural science museum in Buenos Aires. Six inches long and studded with backward-curving fangs that would have hooked into flesh to rip it open, the ...

Dinosaurs weren't in decline when an asteroid smashed into Earth and wiped them out, scientists say. Instead, the idea that dinosaur diversity was declining before the asteroid struck 66 million years ...

Dinosaurs ruled the Earth for over 150 million years. Compared to the mere 4–6 million years that scientists believe humans and their earliest ancestors have been on the planet, it wouldn’t be ...

Chris Doughty, an associate professor in NAU's informatics department, was writing a paper for a conference and had the idea to test a theory about sauropods, forests and fruit. Doughty created a ...

Rocks formed immediately before and after non-avian dinosaurs went extinct are strikingly different, and now, tens of millions of years later, scientists think they’ve identified the culprit—and it ...

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 ...

When you picture a dinosaur, what does it look like? Maybe you think of four-legged herbivores like Apatosaurus or Triceratops. Maybe you imagine large armored dinosaurs like Ankylosaurus or ...