Fossils

A reconstruction of a hypothetical adult Brachiosaurus next to a possible juvenile Brachiosaurus, SMA 0009.

A Baby Brachiosaur?

Brachiosaurus was once thought to be the ultimate prehistoric titan, but we know surprisingly little about this Jurassic dinosaur

Microraptor, covered in iridescent plumage

Microraptor Was a Glossy Dinosaur

The feathered, four-winged dinosaur had a glorious sheen

The chest cavity of Velociraptor MPC-D100/54. The white arrow indicates a broken rib, and the black arrows point to pterosaur bones preserved inside the dinosaur's skeleton.

A Dinosaur’s Pterosaur Lunch

Styracosaurus at the American Museum of Natural History

The Last Styracosaurus Standing

Within just a few years, three species of Styracosaurus were cut down to just one

Triceratops (left) and Torosaurus (right)

The Torosaurus Identity Crisis Continues

Was Torosaurus really just a grown-up Triceratops? A new paper says "no"

Possible postures of Triceratops

Did Triceratops Slouch or Stand Tall?

A new study investigates whether old "three-horned face" held its forelimbs straight down like other dinosaurs or waddled around with its elbows out

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How to Make Sense of Dinosaur Variation

Paleontologist Jordan Mallon describes how he figured out how many Anchiceratops species actually existed

The known skeleton of Juratyrant (black outline) compared to the dinosaur Guanlong for size. The scale bar is one meter.

England’s Jurassic Tyrant

Meet the mysterious small predators that set the stage for the later rise of more imposing tyrants

A silhouette of the dinosaur Nemegtomaia barsboldi, indicating the dinosaur's bones and the nest it was sitting on. Much of the skeleton was lost to beetles.

When Beetles Ate Dinosaurs

Even the world's most formidable consumers eventually became food themselves

A pair of Tyrannosaurus restored in the act at Spain’s Jurassic Museum of Asturias

The Anatomy of Dinosaur Sex

Despite the rarity of direct evidence, paleontologists know quite a bit about dinosaur gonads

A restoration of Lambeosaurus magnicristatus, a dinosaur once thought to represent the male form of Lambeosaurus lambei, but now known to be a distinct species.

Intimate Secrets of Dinosaur Lives

Scientists are searching for dinosaur sex differences in features like size, ornamentation and bone structure—not the bits actually used during mating

Did sexual selection cause sauropods, such as this Barosaurus at the Natural History Museum of Utah, to evolve ludicrously long necks?

Sex and Dinosaur Necks

Did competition for mates drive the evolution of the enormous, long-necked sauropods?

A restoration of Saurolophus angustirostris based upon skeletal and soft-tissue fossils

Judging a Dinosaur By its Cover

A new study suggests that you can distinguish different hadrosaur species by their pebbly hides alone

A reconstruction of Velociraptor, complete with a scleral ring in the eye, at the Wyoming Dinosaur Center in Thermopolis, WY.

The Debate Over Dinosaur Sight

Did Velociraptor hunt under the cover of darkness?

A restoration of the island hadrosauroid Tethyshadros by Nobu Tamura

The “Duck-billed” Dinosaur That Wasn’t

Instead of a long, low duck bill, the beak of Tethyshadros was shaped like a snowplow and serrated. Why it had such a strange beak is a mystery

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How an Ankylosaur Went Out to Sea

How did a heavily armored dinosaur wind up at the bottom of Alberta's Cretaceous sea?

A parent Massospondylus attends to its hatchlings

Paleontologists Uncover Oldest Known Dinosaur Nest Site

The "lay 'em and leave 'em" strategy might not have been the ancestral state for these dinosaurs

The reconstructed shoulder and arm of Majungasaurus

Fearsome Dinosaur Had Ridiculously Short Arms

The forelimbs of this animal look like an evolutionary joke

A dragon statue in Ljubljana, Slovenia

Where Did Dragons Come From?

In honor of the Year of the Dragon, we take a look at some potential inspirations for the dragon myth

A clutch of sauropod eggs at the geothermal nesting site in Argentina. Eggs are outlined by black dashes.

Some Dinosaurs Used Natural Heat for Their Nests

The sauropod site may have resembled Yellowstone National Park, with geysers, hot springs and mud pots

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