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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

An artist's interpretation of the asteroid impact that wiped out all non-avian dinosaurs. Credit: NASA/Don Davis.

Rocks at asteroid impact site record first day of dinosaur extinction

A reconstruction of Kamuysaurus japonicus. Credit: Kobayashi Y., et al, Scientific Reports, September 5, 2019

A new duck-billed dinosaur, Kamuysaurus japonicus, identified

A graphic thermal image of a T. rex with its dorsotemporal fenestra glowing on the skull. Illustration courtesy of Brian Engh.

T. rex had an air conditioner in its head

In-depth fossil analysis could help us understand the true functions of colour. Credit: Aline Dassel/Pixabay, licensed under Pixabay licence

Fossil colour studies are changing our idea of how dinosaurs looked

This photograph shows rocks from the Belcher Islands in Hudson Bay, Canada, from which doctoral candidate Malcolm Hodgskiss collected barite samples dating 2.02 to 1.87 billion years old. Credit: Malcolm Hodgskiss

Ancient die-off greater than the dinosaur extinction

The scans revealed many microscopic food remains including foraminifera (small amoeboid protists with external shells), small shells of marine invertebrates and possible remains of polychaete worms. Credit: Qvarnström mfl.

Filter-feeding pterosaurs were the flamingos of the Late Jurassic

Head posture if the lateral (horizontal) semi-circular canal is parallel to the ground, in hatching (A), juvenile (B) and adult (C) Psittacosaurus lutjiatunensis. Images not to scale. Credit: Claire Bullar and IVPP.

Dinosaur brains from baby to adult

A flightless dinosaur called Similicaudipteryx uses its feathers in a mating display. U of A researchers looked at how such displays may have helped dinosaurs evolve feathers that eventually allowed them to fly. Credit: Sydney Mohr

Sex appeal helped dinosaurs take flight

Ngwevu intloko skull. Credit: Kimberley Chapelle

New species of early dinosaur described from South Africa

Scientists say the femur might have belonged to a gigantic sauropod. Credit: AFP / GEORGES GOBET

Colossal dinosaur bone find in France thrills scientists

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