Dinosaurs

This fragment of a terror bird’s left tibiotarsus, a lower leg bone in birds equivalent to that of a human tibia or shin bone, dates to around 12 million years ago during the Miocene epoch.

Rare 'Terror Bird' Fossil Found in Colombia Reveals the Enormous Size of a Prehistoric Predator

The bone, described two decades after its discovery, suggests the species might have grown up to 20 percent bigger than other terror birds

Silesaurids—including Silesaurus opolensis (pictured above) and the newly described fossil from Brazil (not pictured)—are usually considered non-dinosaurs. Some researchers are suggesting they might be more closely related to certain dinosaurs than previously thought.

A Rare Triassic Fossil Found in Brazil Could Shed Light on the Origin of Dinosaurs

The 237-million-year-old remains are among the oldest silesaurid fossils ever found, adding to paleontologists' understanding of this still-mysterious group of prehistoric reptiles

The first dinosaur fossils discovered in Hong Kong went on display last week.

Paleontologists Discover Dinosaur Fossils in Hong Kong for the First Time

The metropolis is an important center for paleontological research, but until now, fossils of plants and fish were the only remains of dinosaur-era life found there

Allosaurus

This Captivating Guide Uncovers the History and Mystery of Dinosaurs in 50 Fossils

A paleontologist at the Natural History Museum in London chronicles the age of the famous and fascinating massive reptiles

The free museum is located in Williams, Arizona, about an hour south of the Grand Canyon.

Admire the World's Largest Collection of Fossilized Poop at the New 'Poozeum' in Arizona

Owner George Frandsen has some 8,000 coprolites from dinosaurs, sharks and other creatures

A worker of the fungus-farming ant species Mycetophylax asper, collected in Santa Catarina, Brazil, in 2014, on its fungus garden

Ants Farmed Fungi in the Wake of Dinosaurs’ Demise 66 Million Years Ago

A new study from Smithsonian scientists analyzes ant and fungus species, and uncovers the origins of their close partnership

Dinosaurs of all shapes and sizes sported feathers.

Dinosaurs Evolved Feathers for Far More Than Flight

Fluff and fuzz helped the creatures keep warm, blend in and communicate

A reconstruction of Lokiceratops in the 78-million-year-old swamps of northern Montana—as two Probrachylophosaurus move past in the background.

Why Did Dinosaurs Have Horns? It May Not Have Been Simply for Defense

Triceratops and its relatives may have evolved the structures for fighting, impressing mates, and more

A track of dinosaur footprints preserved in floodplain deposits in Brazil. The tracks date to around 120 million years ago.

'Matching' Dinosaur Footprints Discovered in Africa and South America

The fossils show how dinosaurs may have crossed between landmasses around 120 million years ago, when the continents were still connected

When an asteroid struck Earth about 66 million years ago, it wiped out some 80 percent of the planet's animals, including all of the non-avian dinosuars.

Asteroid That Ended the Dinosaurs Came From Beyond Jupiter, Study Finds

Metal isotopes delivered to Earth by the asteroid reveal it's consistent with space rocks formed in the outer solar system

A rendering of Iván Argote's giant pigeon statue perched on top of the High Line

This 16-Foot-Tall Pigeon Sculpture Is Coming to New York City's High Line

Artist Iván Argote hopes the artwork, titled "Dinosaur," will inspire "attraction, seduction and fear"

Scotty, the largest T. rex specimen on record, is on display at the Royal Saskatchewan Museum in Canada.

The Largest T. Rex Could Have Been 70 Percent Heavier Than Fossils Suggest

Two scientists used modeling to predict how big the giant carnivores could have really grown, making a point that fossils likely don't represent the largest or smallest individuals of a species

A coating of iron on Komodo dragons' teeth could help keep them sharp for tearing into prey, as well as protect them from digestive acids.

Komodo Dragons Have Iron-Coated Teeth, Study Finds

New research provides the first evidence of the adaptation in a carnivorous reptile, and it might hold clues to understanding the teeth of dinosaurs

Rainforests, like this one in Ecuador, only appeared after the mass extinction that ended the Age of Dinosaurs.

No, Dinosaurs Did Not Trudge Through Thick Rainforests

The first jungles dense with flowering plants only formed after an asteroid impact wiped out the giant creatures

Prior to the auction, "Apex" was on exhibition at Sotheby’s galleries in New York.

Enormous Stegosaurus Skeleton Called 'Apex' Smashes Auction Records and Sells for $44.6 Million

The 150-million-year-old dinosaur became the most expensive fossil ever sold at auction, raising old questions about whether such specimens should be put up for sale

Asteroid impacts and volcanism have led to mass extinctions on our planet.

Has Life on Earth Survived More Than Five Mass Extinctions?

Scientists aren’t just arguing whether humans are causing a sixth mass extinction event now, but whether many more occurred in the past

An artist’s rendering of the creature called Gaiasia jennyae

Before the Dinosaurs, This Massive Salamander-Like Predator Ruled Earth’s Swamps

Fossils unearthed in present-day Namibia tell an intriguing story of tetrapod evolution

An artist's portrayal of Lokiceratops rangiformis, which lived in the swamps of western North America about 78 million years ago.

Dinosaur With Giant, Loki-Like Horns Has the 'Craziest, Coolest' Headgear—and Could Be a New Species

The discovery sheds light on the evolution of a surprisingly diverse group of horned dinosaurs in the western United States

The three young explorers participated in the excavation of the fossilized remains.

Kids Discover Tyrannosaurus Rex Fossil in North Dakota

The bones belonged to a dinosaur that was likely a teenager when it died. Only a handful of young T. rex skeletons have ever been found

An artist's rendering of a feathered dinosuar in the snow. Feathers would have allowed dinosaurs, ancestors of birds, to trap their body heat in cold climates.

Some Dinosaurs Evolved to Be Warm-Blooded 180 Million Years Ago, Study Suggests

Researchers studied the geographic distribution of dinosaurs to draw conclusions about whether they could regulate their internal temperatures

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