Dinosaurs

An artist’s reconstruction of a baby oviraptorid curled up inside its egg

Dinosaur Embryos Tucked Themselves in Just Like Birds

A stunning fossil egg has allowed paleontologists to find new clues about a dinosaur’s early development

The carnivorous theropods may have evolved a quick pace and sharp agility in order to capture prey.

These Three-Toed, Carnivorous Dinosaurs Ran as Fast as Usain Bolt

Two tracks of footprints reveal that theropods could reach speeds of nearly 28 miles per hour, providing insights on their behavior

Ankylosaurs were herbivores that lived during the Late Cretaceous period. 

New Species of Ankylosaur Unearthed in Chile Had a Flat, Weapon-Like Tail

About 80 percent of the skeleton was found intact and the specimen may reveal an early evolutionary split in the species

The dinosaur remains of Parrosaurus missouriensis took a total of four years to excavate from an undisclosed area in Southern Missouri.  

Fossil Hotbed Uncovered in Missouri Confirms New Species of Duck-Billed Dinosaur

After years of excavating, the team found a tail, two arms and a skull belonging to a dino that would have been 35 feet long

Mosasaurus was among the largest and last of the sea-dwelling mosasaurs.

Giant Sea Lizards Ruled the Waves While T. Rex Roamed on Land

A new fossil discovery shows marine reptiles called mosasaurs lived up until the asteroid impact that killed non-avian dinosaurs

Each nest was found with eight to 30 eggs and in a relatively small area, suggesting that Mussaurus patagonicus raised its young in a communal breeding ground

Paleontologists Unearth the Oldest Evidence of Herd Behavior in Dinosaurs

Fossils found in an ancient nesting ground reveals that herd mentality is almost 200 million years old

The apex predator Ulughbegsaurus was much larger than the contemporaneous tyrannosaur Timurlengia.

New, Giant Carnivorous Dinosaur Was a Terror to Smaller Tyrannosaurs

A fossil jaw reveals the large predator lived 90 million years ago

T. navigans was first described by researchers in 2003. However, until now, everything known about the species was based on two skulls.

Near-Complete Pterosaur Skeleton Obtained in Police Raid Reveals Stunning Details About the Species

The winged reptile's anatomical features hint that it may have foraged around like a chicken and flown short distances to escape predators

Both beer and wine are thought to predate distilled spirits.

'Which Came First: Beer or Wine?' and More Questions From Our Readers

You've got questions. We've got experts

In addition to its school-bus-length wingspan, the creature had a three-foot-long skull with a pointed snout and around 40 sharp teeth.

Giant, Dragon-Like, Flying Reptile Fossil Discovered in Australia

A rare specimen reveals a new species of pterosaur with a staggering 23-foot wingspan

Paleontologist François Therrien measures the jaws of a Gorgosaurus.

Tyrannosaurs Dominated Their Cretaceous Ecosystems

Studies of body size and bite force show that the predators, from babies to adults, filled many niches in their environment

The megaripple features have average wavelengths of 1,968.5 feet and average wave heights of almost 52.5 feet, making them the largest ripples documented on Earth.

Mile-High Tsunami Caused by Dinosaur-Killing Asteroid Left Behind Towering 'Megaripples'

Seismic imaging data depicts 52-feet high waves 5,000 feet below Louisiana

The ancient mammal Gobioconodon (right) squabbles with a therian mammal over a meal in the Late Cretaceous.

Other Mammals, Not Dinosaurs, Kept Our Ancestors Down

The asteroid impact that ended the Cretaceous gave our mammalian ancestors, the therians, an edge over their mammalian competitors

An illustration depicting some of the dinosaurs that roamed the Earth during the Late Cretaceous.

Dinosaurs May Have Been Declining Before the Asteroid Struck Earth

The researchers say the cataclysmic impact may have simply been the final nail in the dinos’ coffin

Scientists reconstructed a new beetle species in 3-D thanks to X-ray scans of fossilized poop.

New Species of Beetle Found in 230-Million-Year-Old Feces

The insect is older than any amber-encased specimen, and may inspire scientists to look for more insects in fossilized dung

The tyrannosaur Nanuqsaurus with its young

Dinosaurs Nested in the High Arctic

Tiny fossils of polar dinosaurs suggest that the reptiles stayed year-round

An artist’s illustration shows an asteroid hitting Earth. Large impactors hit the planet every one to three million years.

New Research of Impact Crater Blows Away Previous Estimates of Its Age

Scientists say the Boltysh crater in Ukraine formed well after the impact in Mexico that caused the dinosaurs to go extinct

A giant replica of the Aedes mosquito, a known vector for the disease yellow fever, has been waiting for visitors to return the National Museum of Natural History’s “Outbreak: Epidemics in a Connected World” exhibit.

Don't Miss These Objects When the Smithsonian's Natural History Museum Reopens

See everything from a giant replica of a mosquito, to an Allosaurus fossil, to a pink fairy armadillo when the museum opens June 18

An artist’s rendering of Oculudentavis naga

World's 'Smallest Dinosaur' Revealed to Be a Mystery Reptile

Paleontologists analyzed two skulls and made the call, but aren't sure about the exact type of animal they've discovered

It took over a decade to identify the dinosaur bones because of the remote location of the bones, the fragile state they were in, and their massive size and weight that at times require a forklift to move.

Two Farmers Found the Largest Dinosaur Ever Unearthed in Australia

The long-necked herbivore's length measured the span of a basketball court, stood at two stories, and weighed an estimated 70 tons

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