Tuesday, December 3, 2019
Dinosaur

Dinosaur

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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.
Dinosaur

Huge dinosaurs evolved different cooling systems to combat heat stroke

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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.
Dinosaur

Paleontologists discover complete Saurornitholestes langstoni specimen

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

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

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

Did mosasaurs do the breast stroke?

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Pterosaur
Dinosaur

New Australian pterosaur may have survived the longest

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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
Dinosaur

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

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

T. rex used a stiff skull to eat its prey

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

Rocks at asteroid impact site record first day of dinosaur extinction

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

A new duck-billed dinosaur, Kamuysaurus japonicus, identified

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

T. rex had an air conditioner in its head

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

Fossil colour studies are changing our idea of how dinosaurs looked

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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
Dinosaur

Ancient die-off greater than the dinosaur extinction

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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.
Dinosaur

Filter-feeding pterosaurs were the flamingos of the Late Jurassic

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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

Dinosaur brains from baby to adult

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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
Dinosaur

Sex appeal helped dinosaurs take flight

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Ngwevu intloko skull. Credit: Kimberley Chapelle
Dinosaur

New species of early dinosaur described from South Africa

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

Colossal dinosaur bone find in France thrills scientists

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Aquilarhinus palimentus, or ‘shovel-chinned eagle nose’. Illustration by ICRA Art
Dinosaur

Strange new species of duck-billed dinosaur identified

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An artist’s rendering of Auroraceratops shows its bipedal posture as well as the beak and frill that characterize it as a member of the horned dinosaurs. Paleontologists from Penn led a team in characterizing this species, discovered in China
Dinosaur

Small horned dinosaur from China, a Triceratops relative, walked on two...

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Crittendeceratops
Dinosaur

When the dinosaurs died, lichens thrived

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