Extinct Animals

Extinct animals are those species which are no longer living. This group includes prehistoric animals like dinosaurs and ice-age mammals, as well as moden species like the Dodo.

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The mysterious aquatic creature lived 300 million years ago, and its fossils have stymied scientists for more than 50 years. New research solves some of the mystery.

By Christopher Hassiotis

The new dino discovery of Timurlengia euotica in Uzbekistan shows that Tyrannosaurus rex ancestors evolved smarts before they got large and took charge.

By Jesslyn Shields

Centuries later, the flightless bird is finally getting some cred.

By Robert Lamb

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More than 100 years after the last quagga died, scientists in South Africa are using selective breeding to bring it back.

By Laurie L. Dove

The bony fish measured more than six feet long and ate prey using a filtering system similar to that of animals today.

By Christopher Hassiotis

Scientists discover male animals flashed sabers far longer than first thought.

By Adrian Rogers

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Iguanodon continues to perplex us. Across the vastness of evolutionary time, she gives us a double thumbs-up. We just don't know if we should run or throw her a ripe mango.

By Robert Lamb

Both of these massive prehistoric creatures belonged to the same family, but they're actually very different species.

By Karen Kirkpatrick

Grizzly bears are usually associated with colder climates, so you might be surprised to learn that they've also called Mexico home.

By Karen Kirkpatrick

The basic idea of "Jurassic Park" — minus the carnage — is both appealing and approaching reality. But reintroducing extinct species requires some careful consideration.

By Karen Kirkpatrick

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Centuries ago, people didn't just sit on park benches and feed pigeons bread -- they ate the birds, too. Needless to say, passenger pigeons did not respond well to humans' voracious appetite.

By Karen Kirkpatrick

A lot of prehistoric animals were massive, but do we really know why? And is there a larger animal roaming the planet today?

By Karen Kirkpatrick & Sarah Gleim

A mysterious wild horse called the tarpan eluded hunters for centuries until succumbing to extinction. What made it special?

By Karen Kirkpatrick

They were creatures of the air, but they aren't part of the avian family tree — and don't call them dinosaurs. What was life like for the pterosaurs, and what has sparked renewed interest in these flying reptiles?

By Clint Pumphrey

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A stunning array of strange and ferocious aquatic beasts patrolled Earth's waters long before they became the stuff of legends and "Jurassic Park" movies. One could eat a great white shark in one gulp.

By Chris Opfer

If you thought sea monsters were just the stuff of myth, you thought wrong. With giant, razor-sharp teeth, ancient cetaceans — the ancestors to modern whales, dolphins and porpoises — make even nightmares seem dull.

By Oisin Curran

Hop in your time machine, set the clock back a few thousand years and meet some woolly wonders. They even have a few things to teach us about the fate of modern elephants.

By Nicholas Gerbis

OK, hop in your time machine and go back 67 million years or so to the Cretaceous period. Then find a Tyrannosaurus rex and challenge it to a race. Sounds crazy, huh? Could you really outrun a Tyrannosaurus rex?

By Alison Cooper

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Learn more about the top 10 most mysterious creatures to disappear from the earth.

The megalodon was born as big as an adult great white and grew to weigh as much as 7 Tyrannosaurus rex. Learn all about the megalodon.

By Joy H. Montgomery

The oldest record of a fossil dinosaur bones discovery is in a Chinese book written between 265 and 317 A.D. Learn more about dinosaur discoveries and the places they were made in this article.

By the Editors of Publications International, Ltd.

Modern dinosaur discoveries in the USA and Canada detail important discoveries in recent times. The United States and Canada are home to some of the most vigorous dinosaur research in the world. What are some of these discoveries?

By the Editors of Publications International, Ltd.

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Dinosaur evolution looks at how dinosaurs developed and changed over the course of time. Paleontologists study the different types of dinosaurs and how they are related to each other. How else is dinosaur evolution studied?

By the Editors of Publications International, Ltd.

Dinosaurs became extinct at the end of the Cretaceous Period. How and why is a puzzle that paleontologists are trying to solve by studying fossils and rock formations. Learn more about the different extinction theories.

By the Editors of Publications International, Ltd.