Fossils

A specimen of the non-avian dinosaur Sinosauropteryx, showing the ruff of simple protofeathers along the back and tail.

Dinosaurs of a Feather

Some researchers insist that birds are not dinosaurs, but do they have any evidence?

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The Greatest Dinosaur Hits of 2011

This was a big year for dinosaur discoveries and debates. Here are a few highlights

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How to Turn a Dinosaur Into a Bird

Two classic bits of animation beautifully visualized the evolution of birds from dinosaurs

An early 19th century representation of Megalosaurus at the Crystal Palace gardens. Thomas Henry Huxley's work gave dinosaurs a much more bird-like look.

Huxley’s Apocryphal Dinosaur Dinner

Fossil lore says 19th century naturalist T.H. Huxley realized that birds were dinosaurs when he carved into a Christmas turkey, but what really happened?

A reconstruction of Patagonykus. The newly-described Bonapartenykus was a close relative of this dinosaur.

Eggs and Enigmatic Dinosaurs

Paleontologists have found the bones of a new dinosaur with eggs nearby, but how do we know whether the bones and eggs go together?

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Hitchcock’s Primeval Birds

Paleontologist Edward Hitchcock was one of the first dinosaur track experts, but why did he insist that birds left the footprints?

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Nedoceratops: To Be, or Not to Be?

Should Nedoceratops and Torosaurus be sunk into Triceratops? The debate continues, and it's not just a bit of paleontological arcana

Tail vertebrae from a previously known Alamosaurus specimen (A), compared with a newly-discovered Alamosaurus tail vertebra (B) and a tail vertebra from the large titanosaur Futalognkosaurus (C).

Alamosaurus Gets Pumped Up

New fossils give a body size boost to what may have been North America's largest dinosaur, Alamosaurus

A life restoration of Spinops sternbergorum

Spinops: The Long-Lost Dinosaur

Spinops was one funky looking dinosaur, and its discovery emphasizes the role of museum collections. Who knows what else is waiting to be rediscovered?

Bones from the foot of a hadrosaur attributed to Edmontosaurus annectens

A Detailed Guide to a Hadrosaur’s Foot

This is not super-sexy research, but some of the biggest gaps in our understanding about dinosaurs involve relatively simple things

A reconstructed skeleton of Rapetosaurus on display at the Field Museum of Natural History in Chicago.

Inside Sauropod Armor

A hollow, thin-walled bone is not exactly the sort of structure that is going to protect a sauropod from attack—so what was its purpose?

A reconstructed model of a young Tyrannosaurus at the Natural History Museum of Los Angeles County. Were these little tyrants covered in feathers?

Was Tyrannosaurus a Big Turkey?

A Microraptor catches a prehistoric bird, based on bird bones found within one Microraptor specimen.

Non-Avian Dinosaur Eats Avian Dinosaur

Paleontologists have found the bones of a bird inside a feathered dinosaur. What can this discovery tell us about how Microraptor lived?

The track of an Early Jurassic theropod dinosaur at St. George, Utah's Dinosaur Discovery Site. This track is of the same general type and close of the age of the tracks recently found near Las Vegas.

Paleontologists Track Dinosaurs Near Las Vegas

Very few skeletons have been found from this period, and much of what we know about the dinosaurs of the Early Jurassic Southwest comes from tracksites

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

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