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Oldest bone-headed dinosaur in the US discovered

  Scientists have unveiled a new species of bone-headed dinosaur, which they say is the oldest in North America, and possibly the world. The dog-sized plant-eater had a dome-shaped skull that may have been used to head-butt other dinosaurs. University of Toronto researchers say the new species, revealed in the journal Nature Communications, fills in gaps in the dinosaur family tree. They believe more small dinosaurs like Acrotholus audeti await discovery.   Bone-headed dinosaurs, or thick-headed lizards, are known scientifically as pachycephalosaurs. They are a strange group of herbivorous dinosaurs which possessed a thick-boned dome on the top of their skulls.   The dome may have been used for decoration or to...

The 10 Biggest Dinosaurs

Identifying the biggest dinosaurs that ever lived isn't as easy a task as you might think: sure, these giant beasts left giant fossils, but it's very rare to unearth a complete skeleton (tiny, bite-sized dinosaurs tend to fossilize all at once, but lumbering giants like Argentinosaurus can often only be identified by a single, massive neckbone). Here are the 10 winners, according to the current state of paleontological research.


1. Biggest Sauropod: Argentinosaurus


More small meat-eating dinosaurs than thought

Summary of quantitative morphotypes showing their stratigraphic ages. (Credit: Derek W. Larson, Philip J. Currie. Multivariate Analyses of Small Theropod Dinosaur Teeth and Implications for Paleoecological Turnover through Time. PLoS ONE, 2013; 8 (1): e54329 DOI: 10.1371/journal.pone.0054329)

Jan. 23, 2013 — University of Alberta researchers used fossilized teeth to identify at least 23 species of small meat-eating dinosaurs that roamed western Canada and the United States, 85 to 65...

10 Most Dangerous Dinosaurs

Let’s travel back in time and talk about some of the most dangerous animals to roam the planet. It’s a real blessing that these guys have ceased to exist otherwise human existence would have been impossible. This particular list discusses ten of the most dangerous dinosaurs. The good part is that they are never coming back to life again, although a first-hand experience on their way of life would have been interesting; dangerous, but really interesting. I hope this list proves to be...

Australia's stampeding dinosaurs take a dip: Largely tracks of swimming rather than running animals

Queensland paleontologists have discovered that the world's only recorded dinosaur stampede is largely made up of the tracks of swimming rather than running animals.

The University of Queensland's (UQ) PhD candidate Anthony Romilio led the study of thousands of small dinosaur tracks at Lark Quarry Conservation Park, central-western Queensland.

Mr Romilio says the 95-98 million-year-old tracks are preserved in thin beds of siltstone and sandstone deposited in a shallow river when...

Jurassic ecosystems were similar to modern: Animals flourish among lush plants

Nodules of ancient soil are fairly common in present day rock, forming as a result of seasonally dry conditions. They harden into mineralized clods, making them easy to spot and sample as they weather out of ancient soil profiles. (Credit: Myers)

— CO2 levels in fossil soils from the Late Jurassic confirm that climate, vegetation and animal richness varied across the planet 150 million years ago, suggesting future human changes to global climate will heavily impact plant and animal...

Was the sauropod dinosaurs' large size due to plant food? Scientists argue old idea still has legs

The long necked sauropod dinosaurs were the largest land animals ever to walk the Earth -- but why were they so large? A decade ago, a team of plant ecologists from South Africa suggested that this was due to the nature of the plant food they ate. However, these ideas have fallen out of favour with many dinosaur researchers. Now Liverpool John Moores University's (LJMU's) Dr David Wilkinson and Professor Graeme Ruxton of University of St Andrews, Scotland, argue that this idea still has...

Why Were Dinosaurs So Big?

One of the things that makes dinosaurs so appealing is their sheer size: plant eaters like Diplodocus and Brachiosaurusweighed well over 50 tons, and a well-toned Tyrannosaurus Rextipped the scales at 7 or 8 tons. From the fossil evidence, it's clear that--species by species, individual by individual--dinosaurs were more massive than any other group of animals that ever lived (with the exception of certain genera of prehistoric sharks,prehistoric whales and marine reptiles like ichthyosaurs...

First Dinosaur to Have Ever Walked on Earth

  Fossils of an arm bone and pieces of bone from the back and hips, unpacked from the drawers of London's Natural History Museum, could belong to the earliest dinosaur ever found, scientists report in the journal Biology Letters.   Named Nyasasaurus parringtoni, the ancient animal was the size of a Labrador dog with a tail more than a metre long. It lived about 245 million years ago, which is 10 to 15 million years before any previously known dinosaur or dinosaur-like creature...

Huge deposit of Jurassic turtle remains found in China

“Bones upon bones, we couldn’t believe our eyes,” says Oliver Wings, paleontologist and guest researcher at the Museum für Naturkunde in Berlin. He was describing the spectacular find of some 1800 fossilized mesa chelonia turtles from the Jurassic era in China’s northwest province of Xinjiang. Wings and the University of Tübingen’s fossil turtle specialist, Dr. Walter Joyce, were working with Chinese paleontologists there in 2008.

The results of their further work in 2009...

Fossils of first feathered dinosaurs from North America discovered: Clues on early wing uses

The ostrich-like dinosaurs in the original Jurassic Park movie were portrayed as a herd of scaly, fleet-footed animals being chased by a ferocious Tyrannosaurus rex. New research published in the journal Science reveals this depiction of these bird-mimic dinosaurs is not entirely accurate -- the ornithomimids, as they are scientifically known, should have had feathers and wings. The new study, led by paleontologists Darla Zelenitsky from the University of Calgary and François Therrien...

Uncovering information about hadrosaur teeth

1000pa (Oct. 11, 2012) — An unusual collaboration between researchers in two disparate fields resulted in a new discovery about the teeth of 65-million-year-old dinosaurs.

With the help of University of Florida mechanical engineering professor W. Gregory Sawyer and UF postdoctoral researcher Brandon Krick, Florida State University paleobiologist Gregory Erickson determined the teeth of hadrosaurs -- an herbivore from the late Cretaceous period -- had six tissues in their teeth...

New fossils suggest ancient origins of modern-day deep-sea animals

 A collection of fossil animals discovered off the coast of Florida suggests that present day deep-sea fauna like sea urchins, starfish and sea cucumbers may have evolved earlier than previously believed and survived periods of mass extinctions similar to those that wiped out the dinosaurs.


The full results are published Oct. 10 in the open access journal PLOS ONE by Ben Thuy and colleagues from the University of Göttingen, Germany.

Previously, researchers believed...

New fanged dwarf dinosaur from Africa ate plants

With tiny 1-inch long jaws, a new species of plant-eater has come to light in rocks in South Africa dating to the early dinosaur era, some 200 million years ago. This “punk-sized” herbivore is one of a menagerie of bizarre, tiny, fanged plant-eaters called heterodontosaurs, or “different toothed reptiles,” that were among the first dinosaurs to spread across the planet.


The single specimen of the new species was originally chipped out of red rock in southern Africa...

Dinosaurs extinction

How did the dinosaurs become extinct?  What happened over 65 million years ago to kill a species that had survived for 150 million years? This is a question that has stumped scientists ever since dinosaur fossils were first discovered. Whatever caused the death of the dinosaurs also caused the death of about 70% of all of the species on the Earth. There are many theories as to how the dinosaurs became extinct. This page presents some of the most popular thoeries. Keep in mind that...

How to survive mass extinction

It is impossible to predict exactly which species would or would not survive a global catastrophe, but it is understood what attributes will contribute to their fate That the last of the non-avian dinosaurs died out some 65.5 million years ago is not controversial. That this occurred largely owing to a dirty great asteroid smashing into the sea off of Mexico is also not in doubt. What remains the subject of much discussion, however, is why they went and other animals did not, or, more...

Rare find: Feathered dinosaur feasted on flying food

University of Alberta researchers found evidence that a feathered, but flightless dinosaur was able to snag and consume small flying dinosaurs.

The U of A paleontology team found the fossilized remains of three flying dinosaurs in the belly of a raptor-like predator called Sinocalliopteryx. Sinocalliopteryx was about two meters in length and roughly the size of a modern-day wolf.

Sinocalliopteryx's flying meals were three Confuciusornis. Confuciusornis was one of the earliest...

Footprints of cretaceous dinosaur found at NASA's Goddard Space Flight Center

About 110 million light years away, the bright, barred spiral galaxy NGC 3259 was just forming stars in dark bands of dust and gas. Here on the part of the Earth where NASA's Goddard Space Flight Center would eventually be built, a plant-eating dinosaur sensed predators nearby and quickened its pace, leaving a deep imprint in the Cretaceous mud.

On Friday, Aug. 17, 2012, noted dinosaur hunter Ray Stanford shared the location of that footprint with Goddard's facility management and...

Engineering technology reveals eating habits of giant dinosaurs

1000pa (July 16, 2012) — High-tech technology, traditionally usually used to design racing cars and aeroplanes, has helped researchers to understand how plant-eating dinosaurs fed 150 million years ago.

A team of international researchers, led by the University of Bristol and the Natural History Museum, used CT scans and biomechanical modelling to show that Diplodocus -- one of the largest dinosaurs ever discovered -- had a skull adapted to strip leaves from tree...

Dinosaurs were warm-blooded reptiles: Mammal bone study sheds light on dinosaur physiology

1000pa (June 28, 2012) — A study with extant mammals refutes the hypothesis on which the assumption that dinosaurs were ectotherms was based.

The work was carried out by researchers from Institut Català de Paleontologia (ICP) and Universitat Autònoma de Barcelona (UAB). It has been published in Nature.

The study analysing the lines of arrested growth (LAG) in the bones of around a hundred ruminants, representative of the specific and ecological diversity of that group of...

Ancient sea reptile with gammy jaw suggests dinosaurs got arthritis too

1000pa (May 15, 2012) — Imagine having arthritis in your jaw bones ... if they're over 2 meters long! A new study by scientists at the University of Bristol has found signs of a degenerative condition similar to human arthritis in the jaw of a pliosaur, an ancient sea reptile that lived 150 million years ago. Such a disease has never been described before in fossilized Jurassic reptiles.

The Bristol scientists studied a giant specimen of the pliosaur Pliosaurus dating from the...

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Biggest Dinosaurs

The 10 Biggest Dinosaurs


Fossil Formation: How Do Fossils Form?

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...