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Dinosaurs

Jurassic pain: Giant 'flea-like' insects plagued dinosaurs 165 million years ago

1000pa (May 1, 2012) — It takes a gutsy insect to sneak up on a huge dinosaur while it sleeps, crawl onto its soft underbelly and give it a bite that might have felt like a needle going in -- but giant "flea-like" animals, possibly the oldest of their type ever discovered, probably did just that.

And a few actually lived through the experience, based on the discovery by Chinese scientists of remarkable fossils of these creatures, just announced in Current Biology, a professional journal.

These flea-like animals, similar but not identical to modern fleas, were probably 10 times the size of a flea you might find crawling on the family dog -- with an extra-painful bite to match.

"These were insects much larger than...

Egg-laying beginning of the end for dinosaurs

1000pa (Apr. 17, 2012) — Their reproductive strategy spelled the beginning of the end: The fact that dinosaurs laid eggs put them at a considerable disadvantage compared to viviparous mammals. Together with colleagues from the Zoological Society of London, Daryl Codron and Marcus Clauss from the University of Zurich investigated and published why and how this ultimately led to the extinction of the dinosaurs in the journal Biology Letters.

The dinosaur's egg and the tiny dino...

Eggs of enigmatic dinosaur in Patagonia discovered

1000pa (Apr. 10, 2012) — An Argentine-Swedish research team has reported a 70-million-year-old pocket of fossilized bones and unique eggs of an enigmatic birdlike dinosaur in Patagonia.

"What makes the discovery unique are the two eggs preserved near articulated bones of its hind limb. This is the first time the eggs are found in a close proximity to skeletal remains of an alvarezsaurid dinosaur," says Dr. Martin Kundrát, dinosaur expert from the group of Professor Per Erik...

Newly discovered close relative of T. rex is largest known feathered dinosaur

1000pa (Apr. 5, 2012) — Palaeontologists have known for more than a decade that some small dinosaurs had bird-like feathers, mainly thanks to beautifully preserved fossils from northeastern China. Now three specimens of a new tyrannosauroid from the same region show that at least one much larger dinosaur had a feathery coat as well.

The name of the new species, Yutyrannus huali, means "beautiful feathered tyrant" in a combination of Latin and Mandarin. The three specimens were...

When dinosaurs roamed a fiery landscape

1000pa (Mar. 29, 2012) — New research reveals dinosaurs may have faced an unexpected hazard: fire. The findings are published in the journal Cretaceous Research by researchers from Royal Holloway, University of London and the Field Museum of Natural History in Chicago who have revealed that during the Cretaceous (145-65 million years ago) fire was much more widespread than previously thought.

The researchers traced fire activity in the fossil record through the occurrence of...

T. rex's killer smile revealed

1000pa (Mar. 18, 2012) — One of the most prominent features of life-size models of Tyrannosaurus rex is its fearsome array of flesh-ripping, bone-crushing teeth.

Until recently, most researchers who studied the carnivore's smile only noted the varying sizes of its teeth. But University of Alberta paleontologist Miriam Reichel discovered that beyond the obvious size difference in each tooth family in T. rex's gaping jaw, there is considerable variation in the serrated edges of...

Some mammals used highly complex teeth to compete with dinosaurs

1000pa (Mar. 14, 2012) — Conventional wisdom holds that during the Mesozoic Era, mammals were small creatures that held on at life's edges. But at least one mammal group, rodent-like creatures called multituberculates, actually flourished during the last 20 million years of the dinosaurs' reign and survived their extinction 66 million years ago.

New research led by a University of Washington paleontologist suggests that the multituberculates did so well in part because they...

Ancient fossil remains reveal Velociraptor's last meal

1000pa (Mar. 6, 2012) — A preserved bone of a Pterosaur was found in the stomach of a Velociraptor.

Scientists have discovered a bone from a pterosaur (giant flying reptile or 'pterodactyl') in the guts of the skeletal remains of a Velociraptor (small predatory theropod dinosaur) that lived in the Gobi Desert in Mongolia some 75 million years ago.

The findings published online in Palaeogeography, Palaeoclimatology, and Palaeoecology, support the idea that Velociraptor, a...

T. rex has most powerful bite of any terrestrial animal ever

1000pa (Feb. 28, 2012) — Research at the University of Liverpool, using computer models to reconstruct the jaw muscle of Tyrannosaurus rex, has suggested that the dinosaur had the most powerful bite of any living or extinct terrestrial animal.

The team artificially scaled up the skulls of a human, alligator, a juvenile T. rex, and Allosaurus to the size of an adult T. rex. In each case the bite forces increased as expected, but they did not increase to the level of the adult T...

Polysternon isonae, a new species of turtle that lived with dinosaurs in Isona (Spanish Pyrenees)

1000pa (Feb. 27, 2012) — Researchers* have recently published in the online edition of the journal Cretaceous Research the discovery and description of a turtle from the end of the age of dinosaurs.They have named this new species as Polysternon isonae, in recognition of the municipality of Isona I Conca Dellà (Catalonia, Spain), where the fossil remains of the specimen type have been found.

The abundance of dinosaur fossils that lived between 65 and 70 million years ago in the...

Robotic dinosaurs on the way for next-gen paleontology

1000pa (Feb. 21, 2012) — Researchers at Drexel University are bringing the latest technological advancements in 3-D printing to the study of ancient life. Using scale models of real fossils, for the first time, they will be able to test hypotheses about how dinosaurs and other prehistoric animals moved and lived in their environments.

"Technology in paleontology hasn't changed in about 150 years," said Drexel paleontologist Dr. Kenneth Lacovara, an associate professor in the...

Plant-eating dinosaur discovered in Antarctica

1000pa (Dec. 19, 2011) — For the first time, the presence of large bodied herbivorous dinosaurs in Antarctica has been recorded. Until now, remains of sauropoda -- one of the most diverse and geographically widespread species of herbivorous dinosaurs -- had been recovered from all continental landmasses, except Antarctica. Dr. Ignacio Alejandro Cerda, from CONICET in Argentina, and his team's identification of the remains of the sauropod...

1000pa (Dec. 19, 2011) — For the first time, the...

Madagascar dinosaur bone is most massive osteoderm ever found

1000pa (Nov. 29, 2011) — What more can we learn about long-necked dinosaurs that we don't already know? A Macalester professor and her colleagues have found that Madagascar dinosaurs carried giant, hollow bones in their skin that may have helped them survive the harsh environments they inhabited. This discovery has shed new light on the anatomy and function of these bones in the biggest animals to ever walk on land.

Biology/Geology Prof....

1000pa (Nov. 29, 2011) — What more can we learn...

'Skin bones' helped large dinosaurs survive, new study says

1000pa (Nov. 29, 2011) — Bones contained entirely within the skin of some of the largest dinosaurs on Earth might have stored vital minerals to help the massive creatures survive and bear their young in tough times, according to new research by a team including a University of Guelph scientist.

Guelph biomedical scientist Matthew Vickaryous co-authored a paper published in Nature Communications about two sauropod dinosaurs -- an adult and a...

1000pa (Nov. 29, 2011) — Bones contained...

Large nest of juvenile dinosaurs, first of their genus ever found

1000pa (Nov. 21, 2011) — A nest containing the fossilized remains of 15 juvenile Protoceratops andrewsi dinosaurs from Mongolia has been described by a University of Rhode Island paleontologist, revealing new information about postnatal development and parental care. It is the first nest of this genus ever found and the first indication that Protoceratops juveniles remained in the nest for an extended period.

The findings were reported in...

1000pa (Nov. 21, 2011) — A nest containing the...

Super-sized muscle made twin-horned dinosaur a speedster

1000pa (Oct. 14, 2011) — A meat-eating dinosaur that terrorized its plant-eating neighbours in South America was a lot deadlier than first thought, a University of Alberta researcher has found. Carnotaurus was a seven-metre-long predator with a huge tail muscle that U of A paleontology graduate student Scott Persons says made it one of the fastest running hunters of its time.

A close examination of the tail bones of Carnotaurus showed its...

1000pa (Oct. 14, 2011) — A meat-eating dinosaur...

T. rex was bigger and grew faster than previously thought, computational analysis reveals

1000pa (Oct. 12, 2011) — A new study reveals that T. rex grew more quickly and reached significantly greater masses than previously estimated. In a departure from earlier methods, the new study uses mounted skeletons to generate body mass estimates.

In a new study just published in the online journal PLoS ONE, a team of scientists led by Professor John R. Hutchinson of The Royal Veterinary College, London, and Peter Makovicky, PhD, curator...

1000pa (Oct. 12, 2011) — A new study reveals...

Rebuilding the head of an armoured dinosaur

1000pa (Sep. 29, 2011) — A University of Alberta-led research team has taken a rare look inside the skull of a dinosaur and come away with unprecedented details on the brain and nasal passages of the 72 million year old animal.

Lead researcher Tetsuto Miyashita, a U of A master's student in paleontology, examined the armoured skull of a Euoplocephalus, a six-metre long plant eater. The skull, which had been sitting in the U of A's...

1000pa (Sep. 29, 2011) — A University of Alberta-led...

NASA's WISE raises doubt about asteroid family believed responsible for dinosaur extinction

1000pa (Sep. 19, 2011) — Observations from NASA's Wide-field Infrared Survey Explorer (WISE) mission indicate the family of asteroids some believed was responsible for the demise of the dinosaurs is not likely the culprit, keeping open the case on one of Earth's greatest mysteries.

While scientists are confident a large asteroid crashed into Earth approximately 65 million years ago, leading to the extinction of dinosaurs and some other life...

1000pa (Sep. 19, 2011) — Observations from...

Polar dinosaur tracks open new trail to past

1000pa (Aug. 10, 2011) — Paleontologists have discovered a group of more than 20 polar dinosaur tracks on the coast of Victoria, Australia, offering a rare glimpse into animal behavior during the last period of pronounced global warming, about 105 million years ago.

The discovery, reported in the journal Alcheringa, is the largest and best collection of polar dinosaur tracks ever found in the Southern Hemisphere.

"These tracks provide us...

1000pa (Aug. 10, 2011) — Paleontologists have...

Light shed on South Pole dinosaurs

1000pa (Aug. 4, 2011) — Dog-sized dinosaurs that lived near the South Pole, sometimes in the dark for months at a time, had bone tissue very similar to dinosaurs that lived everywhere on the planet, according to a doctoral candidate at Montana State University.

That surprising fact falsifies a 13-year-old study and may help explain why dinosaurs were able to dominate the planet for 160 million years, said Holly Woodward, MSU graduate...

1000pa (Aug. 4, 2011) — Dog-sized dinosaurs that...

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Evolution

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Biggest Dinosaurs

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Fossils 

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Book review

Dinosaurs Encyclopedia

Book Review

Dinosaurs: The Most Complete, Up-to-Date Encyclopedia for Dinosaur Lovers of All Ages ... WRITTEN BY A PROFESSIONAL paleontologist specifically for young readers, this guide to the Dinosauria is packed...