Discovery of Raptor-Like Dinosaur Adds a New Wrinkle to the Origin of Birds
A small, 150 million-year-old dinosaur unearthed in Wyoming ran on the ground, but it may have been closely related to some of the first fliers
Prehistoric Hyena’s Teeth Show Bone-Crushing Carnivore Roamed the Arctic
The only hyena to live in North America, <i>Chasmaporthetes</i>, had the stature of a wolf and the powerful jaws of its modern relatives
A 16-Million-Year-Old Tree Tells a Deep Story of the Passage of Time
To explain the exceedingly long life of the planet, the Smithsonian’s new fossil hall designers began with this arboreal wonder
Amid All the Fossils, Smithsonian's New Dinosaur Exhibition Tells the Complex Story of Life
The much-anticipated exhibition is packed full of Mesozoic dinosaur drama, new science, hands-on discoveries and state-of-the-art museum artistry
The Colors of Dinosaurs Open a New Window to Study the Past
Old fossils and new technology are coloring in life’s prehistoric palette
Newly Discovered Bat-Like Dinosaur Reveals the Intricacies of Prehistoric Flight
Though <i>Ambopteryx longibrachium</i> was likely a glider, the fossil is helping scientists discover how dinosaurs first took to the skies
Fossil Site May Capture the Dinosaur-Killing Impact, but It’s Only the Beginning of the Story
The Tanis site in North Dakota contains evidence of the asteroid impact that killed off the dinosaurs
Fossil Treasure Trove of Ancient Animals Unearthed in China
The fossils from the Cambrian Period include dozens of new species and provide a window into life more than 500 million years ago
How Bone Connects Life's Past, Present and Future
A new book dives into the history of osteology, the study of bones, and everything we can learn from the skeletons life leaves behind
Prehistoric Crocodile Cousin Crushed the Bones of Its Prey Long Before T. Rex
Fossilized feces filled with bone reveal the feeding habits of an ancient predator
Scientists Model How Prehistoric Shark Cut Through Prey With 'Scissor Jaws'
The 330-million-year-old species <i>Edestus</i> had one of the most unique bites in natural history
New Prehistoric Shark Species Discovered Alongside Sue the T. Rex
The teeth of <i>Galagadon nordquistae</i> were discovered in the rock that once surrounded the famous <i>T. rex</i> skeleton.
Scientists Used a Robot to Study How Prehistoric Lizards Walked
OroBOT, a robot version of an ancestor to the dinosaurs, is helping fill in some gaps in the evolution of walking
Armored Dinosaurs Kept Cool With a Labyrinth of Nasal Canals
A fluid dynamics study suggests the large and intricate passages in ankylosaurs' skulls were a great way to cool off in the Cretaceous
We Still Don’t Know Why the Reign of the Dinosaurs Ended
The asteroid strike on the Yucatán Peninsula 66 million years ago is only part of the story
Like Whales and Dolphins, Prehistoric 'Fish Lizards' Kept Warm With Blubber
A new analysis of a pristine ichthyosaur fossil reveals that the prehistoric marine reptile had a layer of insulating fatty tissue
How a Changing Climate May Have Killed Off the Marsupial Lion
The fearsome predator, related to koalas and wombats, ruled the wilds of Australia until the loss of its habitat helped drive it to extinction
Weasel-Like Fossils Reveal Evolutionary Clues of the First Mammals
A protomammal known as <i>Kayentatherium</i> was discovered with 38 babies in 185-million-year-old rock
Today's Whales Are Huge, But Why Aren't They Huger?
Most giant cetaceans only got giant in the past 4.5 million years, suggesting they could have room to grow
Tiny Skull Illuminates the Lives of Giant Dinosaurs
The skull of a juvenile <i>Diplodocus</i> is one of the youngest of these dinosaurs ever found
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