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Paleontologists

Juveniles from species of massive carnivorous dinosaurs, such as Tyrannosaurus rex, may have out-competed species that would have otherwise succeeded as medium-sized adults, according to new research.

New Research

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

Podokesaurus holyokensis, lived during the Mid-Jurassic period, 195-180 million years ago, in what is now Massachusetts and could sprint up to 9 to 12 MPH.

Meet Massachusetts’ Official State Dinosaur

The ‘swift-footed lizard’ won 60 percent of 35,000 total online votes

An artist's rendering of a new species of mosasaur named Xenodens calminechari. The marine reptile was about the size of a porpoise and had serrated shark-like teeth.

New Research

Newly Discovered Marine Reptile Sawed Prey With Serrated Teeth

Researchers say the new species of mosasaur had teeth unlike those of any known reptile

The worms that burrowed in these tunnels may have been the ancestors of modern Bobbit worms, Eunice aphtoditois, and is the earliest known fossil of an ambush predator

Enormous Prehistoric Marine Worms’ Lair Discovered Along Sea Floor

Trace fossils suggest that sand strikers drilled these underground tunnels

A paleontologist excavating a 98 million-year-old fossil which may belong to the largest land animal ever. Researchers first started unearthing the creatures remains in 2012 at the Candeleros Formation in the Neuquen River Valley, Argentina.

New Research

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

An artist's illustration of two gray wolves (lower left) vying with a pack of dire wolves for a bison carcass near the tar pits in Rancho La Brea roughly 15,000 years ago.

New Research

Dire Wolves Weren’t Actually Wolves, DNA Analysis Reveals

Ancient DNA extracted from fossils shows the beast split off from Canis lupus and coyotes nearly 6 million years ago

By studying recent mass extinctions on islands like Hawaii, Dr. Helen James is painting a picture of bird biodiversity today. Her research involves digging up fossils in caves to study bygone species, like the Kioea.

Smithsonian Voices

Meet One of the Curators Behind the Smithsonian’s 640,000 Birds

Helen James’ work on avian extinction helps in understanding how bird species today respond to threats like human encroachment and environmental change

Researchers say some of this woolly rhino's internal organs may still be preserved.

Melting Russian Permafrost Yields New Woolly Rhino Specimen

Russian researchers say this may be the best-preserved woolly rhino ever found

A newly described python species named Messelopython freyi. The 47-million-year-old specimen is the world’s oldest known fossil record of a python.

New Research

Oldest-Ever Python Fossil Found in Europe

The 47-million-year-old snake pushes the evolutionary origins of the group back some 20 million years

There have been other ancient wolf remains found in places like Siberia, but finding a well-preserved specimen in Yukon is rare since the ground has to be permanently frozen and the animal must be buried quickly.

A 57,000-Year-Old Mummified Wolf Pup Was Discovered Frozen in Yukon Permafrost

The specimen sheds light on how different gray wolf populations migrated through North America

Centrosaurus had the first well-documented case of malignant bone cancer in a non-avian dinosaur.

The Top Ten Dinosaur Discoveries of 2020

Paleontologists uncovered a great deal about the “terrible lizards” this year

An artist's rendering of Ubirajara jubatus, a newly described dinosaur species featuring two sets of rods sticking out of its shoulders and a mane of fluffy proto-feathers.

New Research

With a Mane and Strange Shoulder Rods, This New Dinosaur Was Quite a ‘Little Show-Off’

The chicken-sized carnivore was found in Brazil and researchers say it may have been quite colorful

An artist's illustration of a newly described species of ichthyosaur called Thalassodraco etchesi swimming in the Late Jurassic seas off the coast of England.

New Research

Amateur Fossil Hunter Discovers New ‘Sea Dragon’ Species on British Beach

Researchers think the new species may have been a deep diving specialist, due to its cavernous ribcage and enlarged eyes

The pterosaurs were flying reptiles that lived in the age of the dinosaurs. This is an artist's illustration of a member of the genus Pteranodon, which included some of the largest known flying reptiles. .

New Research

Study Reveals Humble Origins of Flying Pterosaurs

Tiny, flightless reptiles called lagerpetids may have given rise to the largest flying animal ever to have lived on Earth

Dinosaurs found in Alaska's Prince Creek formation likely remained in the region when it snowed during the winter.

How Dinosaurs Thrived in the Snow

Discoveries made in the past decades help show how many species coped with cold temperatures near both poles

Fourteen years ago, a team of commercial fossil hunters discovered a dinosaur pelvis jutting out of a hillside on a private farm in Montana, and their discovery revealed an intertwined T. rex and Triceratops.

The Mystery of the ‘Dueling Dinosaurs’ May Finally Be Solved Now That They’ve Found a Home

The duo is headed to the North Carolina Museum of Natural Sciences, where researchers will soon determine whether the fossils were even sparring at all

Reconstruction of a titanosaur with ulcerations

First Evidence of Parasites in Dinosaur Bones Found

A team of paleontologists used CT scans and tissue samples to uncover blood pathogens in an infected titanosaur

Compared to other P. robustus males recovered from a nearby cave system called Swartkrans, DNH 155 (pictured here) was much smaller and had more female-like characteristics.

Newly Unearthed Skull Reveals How Ancient Hominids Evolved to Survive a Changing Climate

“Paranthropus robustus” evolved sturdier skulls to be able to eat new, tough vegetation

Qing-Hua Shang, Xiao-Chun Wu and Chun Li / Journal of Vertebrate Paleontology

New Prehistoric Marine Reptile Resembled a Miniature Mix of Loch Ness Monster, Alligator and Toothy T. Rex

The researchers originally thought the fossils belonged to the well-known nothosaurs, but analysis revealed an entirely new species

An extinct group of lizardlike amphibians known as albanerpetontids boasts the earliest example of a slingshot-style tongue. This CT scan shows an exquisitely preserved 99-million-year-old albanerpetontid skull with its long, specialized tongue.

Scientists Find the World’s Oldest Chameleon-Like Tongue Preserved in Amber

A skull and soft tissue perfectly kept in resin show that an ancient amphibian had a tongue that was both fast and extendable

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