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Fossils

A reconstruction of Pampadromaeus

Pampadromaeus: Brazil’s Triassic Plains Runner

A newly discovered dinosaur from Brazil may give paleontologists a better understanding of what the ancestral dinosaur looked like

A reconstruction of Leyesaurus marayensis, showing the bones found so far. The scale bar is 25cm

Leyesaurus and the Origins of Giants

A new dinosaur found in northwestern Argentina adds more detail to the big picture of how forerunners to Jurassic giants evolved

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Montana’s “Dueling Dinosaurs”

Did a recently discovered pair of dinosaurs die at each other’s throats?

The skull Gilmore described as "Gorgosaurus lancensis"

The Origin of a Little Tyrant

Is “Nanotyrannus” a small-bodied tyrannosaur, a juvenile of some unknown species, or a young Tyrannosaurus rex?

The skull of Utahceratops, one of the unusual dinosaurs from southern Utah

SVP Dispatch: Life on the Lost Continent

At the annual SVP meeting, paleontologists review just how western North America got so many weird dinosaurs

A Protoceratops nest containing up to 15 baby dinosaurs

At Last, a True Protoceratops Nest

Plus, fossil evidence for a Cretaceous turducken: inside the guts of a feathered Microraptor dinosaur were the partial remains of a prehistoric bird

A cast of the sauropod Diplodocus at the Utah Field House of Natural History in Vernal, Utah. Our current understanding of sauropods like this differs greatly from hypothetical restorations of "living dinosaurs" in Africa.

Living Sauropods? No Way

Dinosaurs have long been rumored to still survive in the Congo Basin, but is there any truth to the tall tales?

The Thermopolis specimen of Archaeopteryx at the Wyoming Dinosaur Center

The Great Archaeopteryx Debates Continue

A composite reconstruction of Torosaurus utahensis, based upon the skull found by Gilmore, bones found in the Texas bonebed, and the form of Pentaceratops.

The Mysterious Torosaurus

Was Torosaurus just an adult Triceratops? A poorly understood species may hold the key to the answer

The 11th skeleton of Archaeopteryx

Paleontologists Unveil the 11th Archaeopteryx

Just in time for the 150th anniversary year of Archaeopteryx, paleontologists announce an 11th specimen of the dinosaur-like bird

Two-horned face: a reconstruction of Zuniceratops at the Arizona Museum of Natural History

New Mexico’s Peculiar Two-Horned Dinosaur

A peculiar horned dinosaur from New Mexico may help paleontologists understand how titans such as Triceratops evolved

The new, unnamed juvenile theropod under UV light

A Beautiful Baby Dinosaur

One of the most stunning theropod dinosaurs ever discovered may add to our understanding of how feathers evolved

Virtual, fleshed-out models of the Tyrannosaurus specimens "Sue" (left) and "Jane" (center) compared to a human.

How Little Tyrants Grew Up

A new study finds that Tyrannosaurus truly had “thunder thighs.” Juveniles were likely more agile than adults

The skulls of Late Cretaceous hadrosaurs from western North America

Goodbye, Anatotitan?

Just how many different dinosaurs existed in North America during the end of the Cretaceous? It’s a matter of huge debate

Anchiceratops ornatus, on display at the Royal Tyrrell Museum in Canada

The One and Only Anchiceratops

Paleontologists typically have only a handful of specimens, represented by incomplete materials, from a range of sites spanning millions of years

The skeleton of Carnotaurus at the Chlupáč Museum in Prague

Why Did Carnotaurus Have Such Wimpy Arms?

The articulated foot of Talos sampsoni. The second toe (DII) bore a retractable sickle claw

Cretaceous Utah’s New, Switchblade-Clawed Predator

The find may help sort out the history of troodontid dinosaurs in North America

A block containing the partial skeleton of Linhevenator. Abbreviations: ds, dorsal vertebrae; lf, left femur; li, left ischium; lpe, left foot; rh, right humerus; rs, right scapula; sk, skull.

A New Sickle-Clawed Predator from Inner Mongolia

Linhevenator may not have used its arms to capture prey in the same way as its kin, even if it did have a specialized killing claw

A five-inch-long impression of the baby ankylosaur Propanoplosaurus marylandicus. The head is the triangular shaped portion near the top, and the right forelimb can be seen to the left.

Maryland’s Adorable Baby Ankylosaur

A tiny, 112-million-year-old impression of a baby armored dinosaur shows the head and the underside of its body

The skeleton of Xiaotingia (head is to the left)

An Ode to Archaeopteryx

The many fuzzy and feathery dinosaurs that have been discovered reveal one of the most magnificent evolutionary transformations in the history of life

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