This video ranks a wide range of dinosaurs by comparing their physical traits, behaviors, and ecological roles. Factors such ...

Most of us imagine dinosaurs as the huge, towering prehistoric beings that once walked the Earth. But it turns out that dinosaurs were actually a wide range of sizes — and some of them weren’t much ...

An curved arrow pointing right. Most of us imagine dinosaurs as the huge, towering prehistoric beings that once walked the Earth. But it turns out that dinosaurs were actually a wide range of sizes — ...

The meat-eating dinosaurs known as theropods that roamed the ancient Earth ranged in size from the bus-sized T. rex to the smaller, dog-sized Velociraptor. Scientists puzzling over how such wildly ...

It's hard to compete against teenage tyrannosaurs. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Medium-size meat-eating dinosaurs are missing ...

A single fossilized footprint, roughly 1 meter long, has pushed paleontologists to redraw the upper limits of dinosaur size after sitting in storage for nearly two decades. The track, nicknamed ...

Remains of a petite dinosaur reveal that some of the ancestors of birds had already shrunk in size before flight evolved. The dinosaur, a mere 2 feet long (70 centimeters) and weighing the equivalent ...

Everyone knows that the footprints of prehistoric creatures are rare, and that their fossilized remains are even rarer. But finding footprints and fossils together is almost never heard of, which is ...

Broken shin bone of a carnivorous dinosaur, showing rings like the rings of a tree. These closely spaced rings were formed annually and indicate a slow-growing, long-lived animal. Credit: Michael D. D ...