Dinosaurs

Students and teachers can download 3-D print-ready files of the Tyrannosaurus rex and Triceratops skulls.

Ten Smithsonian Artifacts You Can 3-D Print

The list includes Neil Armstrong’s spacesuit, an Abraham Lincoln life mask and a coral skeleton

Although ammonoids died out around the same time as most dinosaurs, new computer models are revealing how these marine animals moved through the water.

Video Game-Inspired Models Demonstrate How Prehistoric Squid Relatives Swam Through the Seas

By simulating liquid flows around the shells of ammonoids, scientists study how these ancient animals moved

Life restoration of Fukuipteryx prima.

Newly Discovered Fossil Bird Fills in Gap Between Dinosaurs and Modern Fliers

A skeleton from the Cretaceous found in Japan reveals an early bird with a tail nub resembling the avians of today

Collections at the Smithsonian's National Museum of Natural History are filled with all sorts of eerie specimens.

Six Bewitching Smithsonian Specimens to Get You Ready for Halloween

Check out some of the spookiest (read: coolest) items in the National Museum of Natural History's collections.

CGI rendering of ancient Loxolophus mammal taken from the PBS NOVA special, Rise of the Mammals. In this recreation, Loxolophus scavenges for food in the palm dominated forests found within the first 300,000 years after the dinosaur extinction.

Fossil Site Reveals How Mammals Thrived After the Death of the Dinosaurs

Recent discoveries highlight how mammals lived before and after the asteroid impact that triggered the world's fifth mass extinction

A visitor catches a whiff of T. Rex breath at the Field Museum.

You Can Now Smell a T. Rex's Stinky Breath at Chicago's Field Museum

The museum recently added a multi-sensory experience to SUE's new exhibit

A reconstruction of a Siamraptor skull based on fossil evidence.

Newly Discovered Dinosaur Was a Giant 'Shark Tooth' Carnivore

<i>Siamraptor suwati</i>, discovered in Thailand, sliced flesh with razor-sharp teeth rather than crushing the bones of its prey

These Prehistoric Sea Monsters Had a Mean Breast Stroke

A new study shows Mosasaurs not only swam using their tails but used powerful pectoral muscles for short bursts to ambush prey

Massive 'Ice Dragon' Ruled the Skies Above Ancient Alberta

The newly described pterosaur with a wingspan over 30-feet was one of the largest flying creatures to ever exist

An artist's depiction of an asteroid impacting the Earth.

What Happened the Day a Giant, Dinosaur-Killing Asteroid Hit the Earth

Using rock cores from Chicxulub crater, geologists piece together a new timeline of the destruction that followed impact

By comparing the skulls of extinct dinosaurs to those of living relatives, such as crocodiles and wild turkeys, researchers have conclude that the prehistoric beasts had sophisticated thermoregulation systems in their skulls.

Special Skull Windows Helped Dinosaur Brains Keep Cool

Dinosaur skulls had many cavities and openings, some of which may have held blood vessels to help cool off the animals' heads

Using heavy picks, Smithsonian researchers in 1923 worked on excavations in Dinosaur National Monument on the border of Colorado and Utah.

How to Discover Dinosaurs

Smithsonian paleontologist Hans Sues reveals some of his tips for finding and excavating a Mesozoic monster

Ngwevu intloko skull

After 30 Years, a South African Dinosaur Is Identified as a New Species

The fossil, held for decades at the University of Witwatersrand, was previously thought to belong to the most common dinosaur species in South Africa

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Megalodon May Be Extinct, but There’s a Life-Size One at the Smithsonian

A 52-foot, life-size model of a <i>Carcharocles megalodon</i> shark is now on display in the National Museum of Natural History

Hesperornithoides miessleri was a feathered dinosaur with many features we now associate with birds.

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

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Reflections on the New Fossil Hall From the Experts Who Created It

The team behind the Smithsonian's new dinosaur and fossil hall reflect on what "deep time" means to them.

This Little Brazilian Dinosaur Ran Across the Desert on One Toe

The recently unearthed dog-sized theropod is a rare example of monodactyl dinosaurs

Pterosaurs May Have Flown as Soon as They Hatched

A new analysis of the flying reptile's embryos indicates the bones needed for flight were highly developed in the egg

Using a geologist’s magnifying glass, Erin DiMaggio carefully scans a piece of volcanic ash in search of tiny minerals that hold the key to determining the age of nearby fossils.

How Do Scientists Date Fossils?

Geologists Erin DiMaggio and Alka Tripathy-Lang explain techniques for targeting the age of a fossil find

The sequoia tree slab is an invitation to begin thinking about a vast timescale that includes everything from fossils of armored amoebas to the great Tyrannosaurus rex.

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

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