News tagged with jawed vertebrates
Scientists name two new species of horned dinosaur
Two new horned dinosaurs have been named based on fossils collected from Alberta, Canada. The new species, Unescopceratops koppelhusae and Gryphoceratops morrisoni, are from the Leptoceratopsidae family of hor ...
Other Sciences / Archaeology & Fossils
Mar 12, 2012 |
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Scientists study hands of fearsome, meat-eating dinosaur
(PhysOrg.com) -- 66 million years ago, the fearsome, meat-eating dinosaur Majungasaurus crenatissimus prowled the semi-arid lowlands of Madagascar. Its powerful jaws bristled with bladelike teeth, and its st ...
Other Sciences / Archaeology & Fossils
Jan 11, 2012 |
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New study showing pelvic girdles arose before the origin of movable jaws
Almost all gnathostomes or jawed vertebrates (including osteichthyans, chondrichthyans, ‘acanthodians’ and most placoderms) possess paired pectoral and pelvic fins. To date, it has generally been ...
Other Sciences / Archaeology & Fossils
Jan 10, 2012 |
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Study of skates and sharks questions assumptions about 'essential' genes
Biologists have long assumed that all jawed vertebrates possess a full complement of nearly identical genes for critical aspects of their development. But a paper in the December 16 issue of Science with Benjamin King of the ...
Dec 15, 2011 |
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Teeny teeth indicate ancient shark nurseries
Fuelled by Hollywood and its vision of Jaws, sharks conjure images of fearsome predators patrolling our seas in search of their next unfortunate victim. It is therefore hard to imagine sharks as relatively ...
Other Sciences / Archaeology & Fossils
Sep 13, 2011 |
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Vertebrate jaw design locked 400 million years ago
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. ...
Jul 06, 2011 |
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The peculiar feeding mechanism of the first vertebrates
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 fresh fossil ...
Other Sciences / Archaeology & Fossils
May 19, 2011 |
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Long lost cousin of T. rex identified by scientists
(PhysOrg.com) -- Scientists have identified a new species of gigantic theropod dinosaur, a close relative of T. rex, from fossil skull and jaw bones discovered in China.
Other Sciences / Archaeology & Fossils
Apr 01, 2011 |
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Bizarre fossil crocodile dispels notion that these reptiles are static and unchanging
(PhysOrg.com) -- We all know that crocodiles are reptiles with long snouts, conical teeth, strong jaws and long tails. But according to researchers at Stony Brook University in New York, we don't know what ...
Other Sciences / Archaeology & Fossils
Dec 08, 2010 |
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Researchers discover genetic clues to evolution of jaws in vertebrates
(PhysOrg.com) -- 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.
Sep 24, 2010 |
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Gentle bilby had 'killer' ancestor
(PhysOrg.com) -- The gentle rabbit-like bilby - Australia's stand-in for the Easter bunny - had an ancient relative that was a far more fearsome little beast, a new study has found.
Other Sciences / Archaeology & Fossils
Sep 01, 2010 |
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New piece in the jigsaw puzzle of human origins
In an article in today's Nature, Uppsala researcher Martin Brazeau describes the skull and jaws of a fish that lived about 410 million years ago. The study may give important clues to the origin of jawed vertebrates, and th ...
Other Sciences / Archaeology & Fossils
Jan 15, 2009 |
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