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Latest Jaw Stories

cb7dd9ff6d93c123c083bed6dd1b355d1
2009-02-25 18:00:00

New research published Wednesday shows that sex has been around for much longer than many scientists had previously believed, with internal fertilization prevalent among prehistoric fish living on tropical reefs during the Devonian period 380 million years ago.The study reveals new insight on the reproductive history of all jawed vertebrates, including humans."It shifts how we think about how reproduction evolved. You're a jawed vertebrate and I'm a jawed vertebrate, so this is our own...

2009-02-10 10:50:58

A paper in this week's PLoS Biology reports that a common gene regulatory circuit controls the development of all dentitions, from the first teeth in the throats of jawless fishes that lived half a billion years ago, to the incisors and molars of modern vertebrates, including you and me. "It's likely that every tooth made throughout the evolution of vertebrates has used this core set of genes," said Gareth Fraser, postdoctoral fellow at Georgia Tech's School of Biology. The first vertebrates...

cea29a56b7cec3e95260f7dc6979af741
2009-01-19 13:45:33

A Swedish scientist has reported the finding of a fossilized specimen that may provide new insight into how jawed vertebrates evolved. Martin Brazeau, of the Department of Physiology and Developmental Biology at Uppsala University in Sweden, said the fossil was discovered Herefordshire, UK, in the 1940s and is an estimated 415 million years old. The specimen is the first-known braincase of an Early Devonian acanthodian "“ which is possibly the earliest group of gnathostomes (jawed...

d76558ffb152fae8dde8350fdd3754681
2008-12-13 13:55:16

Scientists say a peculiar, bony armored amphibian prowled warm lakes 210 million years ago, catching fish and other tasty snacks with one of the most unusual bites in the history of life on Earth. Gerrothorax pulcherrimus lived alongside some of the early dinosaurs and opened its mouth not by dropping its lower jaw, as other vertebrate animals do, instead, it lifted back the top of its head in a way that looked a lot like lifting the lid of a toilet seat. Harvard University's Farish Jenkins,...

2006-11-29 15:01:20

By Jeremy Manier, Chicago Tribune Nov. 29--A fearsome mega-predator of the ancient seas had the most powerful jaws of any fish that ever lived, according to a new study that makes even the biggest great white shark seem like a slack-jawed weakling. The new report by scientists at the Field Museum and the University of Chicago offers a unique window into the bizarre aquatic world of 400 million years ago, when the conquest of dry land by animals had barely begun and the first jawed...

2006-11-28 21:00:17

CHICAGO _ A fearsome mega-predator of the ancient seas had the most powerful jaws of any fish that ever lived, according to a new study that makes even the biggest great white shark seem like a slack-jawed weakling. The new report by scientists at the Field Museum and the University of Chicago offers a unique window into the bizarre aquatic world of 400 million years ago, when the conquest of dry land by animals had barely begun and the first jawed creatures were carving out their...

df62dc0387ccff2e0c122dd5e6b6f6ac1
2005-11-08 13:48:56

In a study illustrating the apparent linkages between the evolutionary development and embryonic development of species, researchers have uncovered the genetic elements that determine the structure and function of a simple biomechanical system, the lower jaw of the cichlid fish. In addition, they've shown that increasing expression of a particular gene in an embryo can lead to physical changes in the adult fish. The results appear in the November 11, 2005 issue of the Proceedings of the...


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
call-note
  • The call or cry of a bird or other animal to its mate or its young.
'Call-note' is newer than 'bird-call,' which originally referred to 'an instrument for imitating the note of birds' but now also refers to 'the song or cry of a bird.'
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