A new analysis of fossil footprints suggests that the 2-meter-tall, 4- to 5-meter-long carnivores that left them could run nearly 45 kilometers per hour, bolstering the evidence that at least some ...

Triceratops was a massive herbivorous dinosaur with three sharp horns, a bony frill, and a strong body, roaming North America 68 million years ago. Triceratops had the longest horns among ...