Types of Dinosaurs: Dinosaur Families & Groups, Examples, Pictures & Facts

Types Of Dinosaurs

Dinosaurs inhabited Earth for around one hundred and seventy million years, and in that vast period of time, many different types of dinosaurs evolved and became extinct.

(Human beings have only existed for three hundred thousand years; a tiny fraction of the time that dinosaurs existed.)

In order to understand the relationships between different types of dinosaurs, paleontologists organize individual dinosaur species into groups of related species.

For example, Tyrannosaurus rex was part of a family of dinosaurs known as Tyrannosauridae, which itself was part of an even larger group of dinosaurs: Saurischia, which contained both predatory and herbivorous species.

On this page, we list the major dinosaur groups, and provide examples of dinosaurs of each type.

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List Of Dinosaurs: Dinosaur Names With Pictures & Interesting Information

List Of Dinosaurs

Welcome to the Active Wild list of dinosaurs. This page contains a list of dinosaurs names with pictures and information. Here you can learn about the many different kinds of dinosaur that existed in the Mesozoic Era.

Designed to be an "online dinosaur museum", it's a great place to start if you want to find out more about a particular dinosaur.

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Did Humans Live With Dinosaurs? The Last Dinosaurs & First Humans

Did Humans Live With Dinosaurs

Humans did not live with dinosaurs; many millions of years separate the last (non-avian) dinosaurs and the first humans. Dinosaurs first appeared in the Triassic Period of the Mesozoic Era, and became extinct 66 million years ago. The first modern humans (Homo sapiens) appeared around 315,000 years ago; at least 65 million years after the last dinosaurs.

Read on for interesting facts on dinosaurs and humans (and why they never crossed paths)…

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Are Alligators Dinosaurs? How Crocodilians Are Related To Dinosaurs

Are Alligators Dinosaurs

Are Alligators Dinosaurs?

Alligators are not dinosaurs, but they, along with the other crocodilians, are the closest living relatives of dinosaurs (apart from birds, which are dinosaurs). Although alligators are neither dinosaurs, nor the descendants of dinosaurs, they are more closely-related to dinosaurs (and therefore birds) than they are to other living groups of reptiles, such as snakes and turtles.

To understand why alligators are not dinosaurs, and how the two groups of animals are related, we need to go back millions of years in the reptile family tree to the Mesozoic Era...

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Gallimimus Dinosaur Facts, Pictures, In-Depth Information

Gallimimus Facts

What Is Gallimimus?

Gallimimus was a mid-sized theropod dinosaur that lived in what is now Mongolia during the late Cretaceous. It is the best-known and largest of the ornithomimids (“bird-mimics”), a family of dinosaurs named for their resemblance to living birds such as ostriches. With a slender, lightweight body and powerful legs, Gallimimus was built for speed and is one of the fastest-known dinosaurs.

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T Rex Dinosaur Facts: Meet The Real Tyrannosaurus Rex

t rex tyrannosaurus rex

T rex, or Tyrannosaurus rex, is a species of carnivorous, theropod dinosaur that lived in what is now the western United States during the Late Cretaceous. With an estimated length of up to 13 meters / 43 feet, T. rex is one of the largest land predators that ever lived. T-rex lived alongside several other well-known dinosaurs, including Triceratops and Ankylosaurus.

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