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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...

Particles of crystalline quartz wear away teeth

Dental microwear, the pattern of tiny marks on worn tooth surfaces, is an important basis for understanding the diets of fossil mammals, including those of our own lineage. Now nanoscale research by an international multidisciplinary group that included members of the Max Planck Institute for Evolutionary Anthropology in Leipzig has unraveled some of its causes. It turns out that quartz dust is the major culprit in wearing away tooth enamel.

Silica phytoliths, particles produced by plants...

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...

Who deforested Central Africa: Humans or climate?

Excavations in Cameroon. (Credit: © IRD / R. Oslisly)

Jan. 7, 2013 — It is a much debated question: why did Central African forests become partially fragmented between 2,500 and 2,000 years ago, leaving room for more open forest landscapes and savannah? Recently, a publication attempted to explain that it was the farming Bantu peoples who were responsible for this, through the large-scale clearing that they undertook. But several IRD experts and their partners (1) contest this...

Coral records suggest El Nino activity rises above background

Georgia Tech researchers use a hydraulic drill to remove cores from a large fossil coral “rock” on a beach on Fanning Island in the central Pacific. In the laboratory, the cores provide information about the temperature and rainfall changes associated with past El Nino activity. (Credit: Georgia Tech Photo: Jordan Watson)

Jan. 3, 2013 — By examining a set of fossil corals that are as much as 7,000 years old, scientists have dramatically expanded the amount of information available...

First Bird

First Bird
What was the earliest known bird?

Unexplained artifacts

unexplained artifacts
The 10 most amazing unexplained artifacts


Timeline: Human Evolution

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...