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Dinosaurs

A spotted hyena in South Africa's Kruger National Park.

North America Used to Have its Very Own Hyena

These giggly beasts didn’t just roam Africa and the Middle East. They were right here in our backyard

Computer image of Triopticus skull overlaid on the field site where it was found.

Paleontologists Probe the Bonehead that Foreshadowed Domed Dinos

This striking skull shape evolved at least twice. But what was its purpose?

In an artist's interpretation, the forested and warm Late Cretaceous is abruptly destroyed by a six-mile wide asteroid.

Life Bounced Back After the Dinosaurs Perished

The devastation was immediate, catastrophic and widespread, but plants and mammals were quick to take over

The tiny pterosaur from the late Cretaceous was no bigger than a cat and sported a five-foot wingspan.

Cool Finds

Two Pterosaur Finds Are Helping to Untangle Their Family Tree

An intact skull and a pint-sized species offer clues to how these creatures evolved

Including it's current dirt and plaster packing, the skull weighs roughly 2,500 pounds.

Cool Finds

Rare Complete T. Rex Skull Found in Montana

The “Tufts-Love skull” will be cleaned and put on display at the Burke Museum of Natural History and Culture

This toy diplodocus fetches up to $600 on eBay.

This Man Claims He Has the World’s Largest Collection of Toy Dinosaurs, and He Loves Them All

Randy Knol’s stunning array chronicles our evolving knowledge about the prehistoric beasts

An artist's rendering of Chicxulub, the asteroid believed to have wiped out large dinosaurs and reshaped parts of the world.

Journey to the Center of Earth

What Happened in the Seconds, Hours, Weeks After the Dino-Killing Asteroid Hit Earth?

The Cretaceous forecast: Tsunamis, a deadly heat pulse, and massive cooling.

Paleontologist Paul Olsen of Lamont-Doherty Earth Observatory is co-leading a project in Arizona's Petrified Forest National Park to drill deep into rocks dating back more than 200 million years.

Journey to the Center of Earth

Defying Critics, Paleontologist Paul Olsen Looks for Hidden Answers Behind Mass Extinctions

From a childhood spent discovering fossils to tangling over questions of ancient life and death, this scientist constantly pushes the boundaries.

A illustration of a herd of hadrosaurs like the arthritic one discovered in New Jersey.

New Research

This Duck-Billed Dinosaur Had a Rare Case of Arthritis

Nothing like a bum leg

Illustration of a Velafrons, a hadrosaur whose name means "sailed forehead."

Chew on This: Powerful Jaws Fueled a Jurassic Herbivore Boom

Teeth, not flowers, might be the key to the duckbills’ success

Illustration of Gualicho shinyae hunting with its jaws, not arms.

Arm Day at the Gym Apparently Not a Thing for Newly Found, Tiny-Armed Dino

Turns out T. rex doesn’t have a copyright on those adorably awkward, itty-bitty arms

Portrait of paleontologist Mary Anning and her trusty assistant, Tray.

These Paleo Pets Made Fossil Hunting Less Lonely

In the solitary hunt for bones, furry companions provide company, act as field assistants and sometimes even make the ultimate sacrifice

99-million-year-old flight feathers.

New Research

99-Million-Year-Old Bird Wings Found Encased in Amber

The rare fossils from the age of the dinosaurs look a lot like modern-day bird wings

Sacel Castle was the primary home of the Nopcsa family, which traced its roots in the area to the 14th century.

History Forgot This Rogue Aristocrat Who Discovered Dinosaurs and Died Penniless

Now fallen into shadow, the Romania-born Baron Franz Nopcsa was a groundbreaking scientist, adventurer — and would-be king

You'll never guess how researchers found this fossil of the petite terrestrial crocodile Hoplosuchus kayi.

These Are Some of the Weirdest Ways Paleontologists Find Fossils

Sometimes you pee on them, sometimes you’re just trying to get away from other paleontologists. Here are the discovery stories scientists won’t tell you

New Research

Mammals May Have Dinosaurs to Thank for Their Night Vision

Mammals most likely developed a new pathway to night vision to avoid the jaws of dinos and other daytime predators

Co-author in the new study, Nick Longrich from the Milner Centre for Evolution at Bath University, poses with some mammal specimens.

New Research

The Event that Wiped out Dinosaurs Also Nearly Did in the Mammals

New estimates suggest a measly seven percent of mammals survived the extinction

Pie chart showing the number of times ankylosaur fought a particular foe.

Sadly, “Ankylosaur Fight Club” Is Probably Wishful Thinking

Ornate armor may have had more to do with communication than combat

Prospecting for fossils in the Morrison Formation near Shell, Wyoming

Family Travel

Hunting Lost Worlds in Wyoming’s Bighorn Basin

A geology tour with Kirk Johnson, Director of the Smithsonian Natural History Museum, and Will Clyde, a geology professor at University of New Hampshire

An artists' rendering of Machairoceratops cronusi, or "bent sword face." Machairoceratops was found in 77-million-year-old rock in southern Utah.

Two New Discoveries Add to a Horned Dino Revolution

Twenty years ago, there were about 23 horned dinosaurs. Today, the count has more than tripled

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