A dinosaur is a type of animal that lived on Earth millions of years ago, long before humans existed……

Dinosaurs lived during a massive stretch of Earth’s history known as the Mesozoic Era, which began about 252 million years…..

Not every ancient, scary-looking creature from the past was a dinosaur. Even though movies and books often call all prehistoric…..

When dinosaurs lived, Earth looked very different from the planet we know today. The continents were not separated like they…..