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Dinosaurs are a diverse group of reptiles [note 1] of the clade Dinosauria. They first appeared during the Triassic period, between 243 and 233.23 million years ago (mya), although the exact origin and timing of the evolution of dinosaurs is a subject of active research.
Dinosaurs have fascinated kids and adults alike since the very beginning of the discovery of their existence. Their habits, characteristics, and even their appearance are still a mystery, which naturally makes them that much more interesting.
Over a thousand dinosaur species once roamed the Earth. Learn which ones were the largest and the smallest, what dinosaurs ate and how they behaved, as well ...
Find out facts about dinosaurs, including Diplodocus and Stegosaurus, and uncover what science is revealing about the appearance and lives of these prehistoric animals.
Complete guide to dinosaurs, with list of dinosaurs from each period. Dinosaur evolution, extinction, types, plus interesting facts.
What are dinosaurs? Dinosaurs are a diverse group of reptiles that were the dominant terrestrial life form on Earth during the Mesozoic Era, about 245 million years ago. Dinosaurs went into decline near the end of the Cretaceous Period, about 66 million years ago.
Learn about different types of dinosaurs, their history, discoveries, size, diets, contemporaries, and much more.
The dinosaurs were among the most successful animals ever to live on the Earth. Their reign lasted over 100 million years - and if birds evolved from the dinosaurs, then their descendents are...
From the meteor that made them extinct, to what they may have looked like (feathers and all), below you can learn everything worth knowing about dinosaurs from our top experts.
A-Z of dinosaurs full of facts and pictures. Search by name, type of dinosaur, or when and where they lived. Find out key information such as size, diet and how to pronounce names.