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

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 ...

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 ...

They were originally fierce predators the size of a small ostrich. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. A bizarre group of raptor-like ...

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 ...

Posts from this author will be added to your daily email digest and your homepage feed. At about 50 feet in length, with an extremely long neck and elephant-like legs, Rapetosaurus is big, but on the ...

WASHINGTON — Think your kids grow fast? Scientists say one dinosaur baby went from tiny to a true titan in the blink of a prehistoric eye. At birth, titanosaur babies weighed about as much as average ...

Scientists have unearthed remains of a massive, plant-eating dinosaur whose neck may have measured twice the length of its body. Herbivorous dinosaurs called sauropods are noted for their massive ...

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 ...