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Latest Jaw Stories

6479af574756d4199a07b75749e3f215
2011-08-10 13:00:00

Researchers say a jawbone found in Kazakhstan gives more evidence towards the theory that giant birds roamed the Earth during the same time as the dinosaur. The team said the new species had a skull about 12-inches long and would have stood 6 to 9 feet tall.  The researchers also said the bird would have had a wingspan of about 13 feet. The only other evidence of a bird of this size during the period was a fossilized spinal bone found in France and was reported in a 1995 paper in the...

13854d9d0c52af08e348cdcec4f0fabc
2011-08-08 07:15:40

Diet and genetics dictate adult jaw shape Researchers at Johns Hopkins found that use over time and not just genetics informs the structure of jaw bones in human populations. The researchers say these findings may be used to predict the diet of an ancient population, even if little evidence exists in the fossil record. It can also make it easier for scientists to pinpoint the genetic relationship between fossils. Their results were published online June 23 in the American Journal of Physical...

2011-07-07 00:38:56

New data on the initial diversification of jaws sheds light on early vertebrate feeding ecology More than 99 per cent of modern vertebrates (animals with a backbone, including humans) have jaws, yet 420 million years ago, jawless, toothless armour-plated fishes dominated the seas, lakes, and rivers. There were no vertebrates yet on land and the recently evolved jawed fishes were minor players in this alien world, some sporting unusual jaw shapes and structures that bear little physical...

582b412d111dcaf076f78eb05d8539fd
2011-06-28 08:12:55

New research from Brown University shows that fish and mammals chew differently. Fish use tongue muscles to thrust food backward, while mammals use tongue muscles to position food for grinding. The evolutionary divergence is believed to have occurred with amphibians, though further research is needed to identify which species and when. Results are published in Integrative and Comparative Biology. Evolution has made its marks "” large and small "” in innumerable patterns of life....

642262c4969b3def547bd7388e305db2
2011-05-20 06:40:00

A fang-like tooth on double upper lips, spiny teeth on the tongue and a pulley-like mechanism to move the tongue backwards and forwards "“ this bizarre bite belongs to a conodont and, thanks to a fresh fossil find, has now been analyzed and reconstructed by a Swiss-French research team headed by paleontologists from the University of Zurich. Their analysis sheds some light on the evolutionary origin of jaws. Using a 3D animated model, the reconstruction shows for the first time how the...

ac3d2f5d029828bd1a2373dbf3548cf91
2011-04-19 05:50:00

A reptile that lived 275 million years ago in present day Oklahoma is giving paleontologists a glimpse of the oldest known toothache, predating by 200 million years the previous record for the earliest known evidence of tooth decay in a terrestrial vertebrate. The researchers, led by Professor Robert Reisz, who chairs the Department of Biology at the University of Toronto Mississauga, found evidence of bone damage due to oral infection in Paleozoic reptiles as they adapted to living on...

2010-09-25 01:36:02

A half-billion years ago, vertebrates lacked the ability to chew their food. They did not have jaws. Instead, their heads consisted of a flexible, fused basket of cartilage. This week, an international team of researchers led by a faculty member from the University of Colorado at Boulder published evidence that three genes in jawless vertebrates might have been key to the development of jaws in higher vertebrates. The finding is potentially significant in that it might help explain how...

d02de40bb4e47f35dec94e8025187d8d1
2010-06-22 09:29:22

The robust jaws and formidable teeth of some of our ancestors and ape cousins may suggest that humans are wimps when it comes to producing a powerful bite: but a new study has found the opposite is true, with major implications for our understanding of diet in ancestral humans. The surprise findings suggest that early modern humans did not necessarily need to use tools and cooking to process high-nutrient hard foods, such as nuts - and perhaps less tough foods such as meat - but may have lost...

5ce11bf7f877b4d46cbeb0e663c07a8f
2009-10-12 07:20:29

Scientists announced recently that they have created a joint in the jaw from human adult stem cells, an advance which could revolutionize reconstructive surgery. It is hoped the technique could be used not only to treat disorders of the specific joint, but more widely to correct problems with other bones too. The bone which has been created in the lab is known as the temporomandibular joint (TMJ). Problems with this joint such as TMJD (Temporomandibular Joint Disorder) can cause pain in the...

33e893db0aedaa13301d39992ec5038b1
2009-03-11 11:11:07

Researchers from London's Natural History Museum have found a rare fish that features small bone fangs. Found exclusively in a single Burmese stream, the Danionella dracula appears to have lost its teeth over time before it later evolved the fangs made of bone, researchers said in the Royal Society's journal Proceedings B. "When you watch them in captivity you can see the males sparring," NHM's Ralf Britz told BBC News. "They display with their lower jaws open incredibly widely, then they...


Latest Jaw Reference Libraries

Angler, Lophius piscatorius
2012-04-02 16:12:16

The Angler, (Lophius piscatorius), also known as the Fishing-frog, Frog-fish, or Sea-devil, is a species of monkfish in the family Lophiidae. It is found in coastal waters of the northeast Atlantic, from the Barents Sea to the Strait of Gibraltar, the Mediterranean and the Black Sea. This species comprises a significant commercial fishery in parts of its range. The Angler has a very large, broad head that is flat and depressed. The rest of the body appears to be a mere appendage. The wide...

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Word of the Day
sough
  • A murmuring sound; a rushing or whistling sound, like that of the wind; a deep sigh.
  • A gentle breeze; a waft; a breath.
  • Any rumor that engages general attention.
  • A cant or whining mode of speaking, especially in preaching or praying; the chant or recitative characteristic of the old Presbyterians in Scotland.
  • To make a rushing, whistling, or sighing sound; emit a hollow murmur; murmur or sigh like the wind.
  • To breathe in or as in sleep.
  • To utter in a whining or monotonous tone.
According to the OED, from the 16th century, this word is 'almost exclusively Scots and northern dialect until adopted in general literary use in the 19th.'
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