Birds are avian dinosaurs, and phylogenetic taxonomy includes over 11,000 extant species in the group Dinosauria. Dinosaurs are a diverse group of reptiles [note 1] of the clade Dinosauria. …

Dec 22, 2025 · Dinosaur, the common name given to a group of reptiles, often very large, that first appeared roughly 245 million years ago and thrived worldwide for nearly 180 million years. …

Quick facts about dinosaurs for kids and grown-ups! Find out what dinosaurs ate, how they may have behaved, what they may have looked like, and more.

The Dinosauria Dinosaurs, one of the most successful groups of animals (in terms of longevity) that have ever lived, evolved into many diverse sizes and shapes, with many equally diverse …

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.

High-quality dinosaur images, facts, and fossils for kids and educators. Easy to download or print!

Jun 14, 2025 · 150 million years ago, dinosaurs roamed here. Their fossils are still embedded in the rocks. Today, mountains, desert, and rivers flowing in canyons support a variety of life. …

Join Dinosaurs for incredible kid-friendly videos. Enter the prehistoric world when dinosaurs ruled the Earth. See them hunt and battle. See them roam in mas...

Jan 16, 2025 · Dinosaurs are a diverse group of reptiles that were the dominant terrestrial vertebrates for over 160 million years, from the late Triassic period (about 230 million years …

Dinosaurs are a diverse group of mostly land-based animals that are related to today's reptiles and birds. In fact, while dinosaurs are commonly seen as extinct and known only by their …