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Allosaurus jimmadseni

New species of Allosaurus discovered in Utah

Illustrated scene of dinosaurs and asteroid.

In death of dinosaurs, it was all about the asteroid –...

The skull of the juvenile T. rex, "Jane", was slender with knife-like teeth, having not yet grown big enough to crush bone.

Researchers learn more about teen-age T. rex

Artist’s depiction of an ornithopod dinosaur tending its nest.

Baby dinosaurs found in Australia

A fossilized snail shell, ready to be analyzed in the laboratory

Earth was stressed before dinosaur extinction

An intimidating sight: Asfaltovenator vialidadi. Source: Gabriel Lio

Experiments in evolution

This slab of sandstone has been on display since 1896, showing off the scaly footprints of a prosauropod dinosaur. Scientists only recently realized that the deep grooves on the left may be the track of a sailing stone. Credit: Lull, R.S., 1915

Sailing stone track discovered ‘hiding in plain sight’ in dinosaur fossil

Illustration of the newly described Kupoupou stilwelli by Jacob Blokland, Flinders University. Credit: Jacob Blokland, Flinders University

When penguins ruled after dinosaurs died

New research is shedding light on how and where ancient flying reptiles called pterosaurs lived. Credit: Julius Csotonyi

95-million-year-old fossil reveals new group of pterosaurs

A representation of a plesiosaur - living reconstruction

Divers of the past : Plesiosaur – Why did the size...

CT scan-generated models of the jaws of Majungasaurus (left), Ceratosaurus (center) and Allosaurus (right), with microscopic views of the interior of their teeth below each model. Stripes running from upper left to lower right in each microscopic image are daily deposited incremental lines, which allow the amount of time it took for a tooth to grow to be reconstructed. Credit: PLOS ONE

Researchers determine dinosaur replaced teeth as fast as sharks

Fossilised 20 centimetre long hand claw of theropod discovered at Eric the West site on Victoria’s Otway Coast. Credit: Stephen Poropat/Museums Victoria

Huge-clawed predatory dinosaur discovery in Victoria

Photograph of the traces analyzed: : Megalosauripus transjuranicus (A) y Jurabrontes transjuranicus (B). Credit: Matteo Belvedere et al.

Jurassic dinosaurs trotted between Africa and Europe

Gigantic dinosaurs like the sauropod Diplodocus, which weighed over 15 tons and was longer than an 18-wheeler truck, would have had problems with potentially lethal overheating. Hot blood from the body core would have been pumped to the head, damaging the delicate brain. New research shows that in sauropods, evaporation of moisture in the nose and mouth would have cooled extensive networks of venous blood destined for the brain. Other large dinosaurs evolved different brain-cooling mechanisms, but all involving evaporative cooling of blood in different regions of the head. Credit: Life restoration by Michael Skrepnick. Courtesy of WitmerLab at Ohio University.

Huge dinosaurs evolved different cooling systems to combat heat stroke

A small, feathered theropod dinosaur, Saurornitholestes langstoni was long thought to be so closely related to Velociraptor mongoliensis that some researchers called it Velociraptor langstoni—until now. Credit: Jan Sovak.

Paleontologists discover complete Saurornitholestes langstoni specimen

Siamraptor skull reconstruction. Credit: Chokchaloemwong et al., 2019

Meet Siamraptor suwati, a new species of giant predatory dinosaur from...

Plotosaurus bennisoni is a mosasaur from the Upper Cretaceous (Maastrichtian) North America. Restoration illustration from Wikimedia Commons, CC BY 3.0.

Did mosasaurs do the breast stroke?

Pterosaur

New Australian pterosaur may have survived the longest

Artist's reconstruction of two rauisuchians fighting over a desiccated corpse of a mammal-relative in the Triassic of southern Africa. In the background, dinosaurs and mammal-like reptiles form other parts of the ecosystem. Credit: Viktor Radermacher, owns copyright

Croc-like carnivores terrorized Triassic dinosaurs in southern Africa 210 million years...

An artist’s rendition of the Tyrannosaurus rex with the 3D imaging showing muscle activation in its head. Illustration courtesy of Brian Engh.

T. rex used a stiff skull to eat its prey

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