Dinosaurs
Dinosaurs Evolved Flight at Least Three Times
A new study finds that many feathered dinosaurs were more aerodynamic than previously thought
Meet Cassowary Brothers Irwin and Dundee, Descendants of Dinosaurs
This giant bird is considered to be the dinosaurs’ closest living relative
Big Eyes and Long Inner Ears Helped This Tiny, Owl-Like Dinosaur Hunt at Night
The chicken-sized Shuvuuia dinosaur had a fragile, birdlike skull, one-clawed hands and long skinny legs
An Ode to the World's Most Average Dinosaurs
They lacked the gargantuan size and spikes of the species museums often celebrate, but these species are how paleontologists learn about the Mesozoic
New Study Finds T. Rex Walked at a Slow Pace of Three Miles Per Hour
Dutch researchers calculated the surprising speed of the dinosaur based on 3-D reconstructions of its lengthy tail
New Fossils Suggest Tyrannosaurs May Have Hunted in Packs
Researchers say the trove of four or five specimens found in southern Utah challenges the assumption that these predators were solitary
In All of Time, 2.5 Billion Tyrannosaurus Rexes Have Roamed Earth
The study used calculations based on body size and metabolism rate to estimate out how many dinosaurs lived throughout the species existence
A Prehistoric Flying Creature Nicknamed 'Monkeydactyl' May Have Climbed Trees Using Opposable Thumbs
The newly described Jurassic pterosaur may be the oldest animal known to possess opposable thumbs
Stones Hint at Possible 600-Mile Dinosaur Migration From Wisconsin to Wyoming
Some 150 million years ago, prehistoric plant-eaters may have carried the rocks in their bellies to aid digestion
How the Dinosaur-Killing Asteroid Spurred the Evolution of the Modern Rainforest
New evidence from fossil plants shows today’s South American rainforests arose in the wake of Earth’s fifth mass extinction
For the First Time, Paleontologists Unearth Fossil of Non-Avian Dinosaur Incubating a Nest of Eggs
The find is the first evidence that oviraptorosaurs—also called 'egg thief lizards'—were nurturing to their young
Why Medium-Sized Dinosaurs Are Often Missing From the Fossil Record
Study suggests huge carnivores like T. rex may have occupied the ecological roles of medium-sized predators as juveniles
Climate Change May Have Aided Dinosaurs' Journey From South America to Greenland
A shift in CO2 levels millions of years ago made conditions on Earth milder, allowing herbivores, like sauropodomorphs, to migrate to Greenland
Scientists Name Old Dinosaur for the Smithsonian
A new study has reclassified a fossil discovered in 1883 as a dicraeosaurid—a family of long-necked dinosaurs rarely found in North America
Astrophysicists Chart Source of Asteroid That Killed Dinosaurs
A new model explains a possible route for the extraterrestrial rock before it blasted Earth
Meet Massachusetts' Official State Dinosaur
The 'swift-footed lizard' won 60 percent of 35,000 total online votes
Newly Discovered Marine Reptile Sawed Prey With Serrated Teeth
Researchers say the new species of mosasaur had teeth unlike those of any known reptile
Four-Year-Old Lives Every Child's Dream and Discovers a Dinosaur Footprint
Found on a beach in Wales, the fossil is 220 million years old and shows the details of the muscles and joints in the reptile's foot
Are Crocodiles Flawless? The Reptiles Haven't Changed in 200 Million Years
For crocs, slow and steady wins the evolutionary race
Dinosaur Unearthed in Argentina Could Be Largest Land Animal Ever
The skeleton is still far from complete but paleontologists say what they've found suggests the dinosaur may be more than 120 feet long
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