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Reexamination of T. rex verifies disputed biochemical remains
July 29, 2009A new analysis of the remains of a Tyrannosaurus rex (T. rex) that roamed Earth 68 million years ago has confirmed traces of protein from blood and bone, tendons, or cartilage. The findings, scheduled for publication in the Sept. 4 issue of ACS' monthly Journal of Proteome Research, is the latest addition to an ongoing controversy over which biochemical remnants can be detected in the dino.
In the study, Marshall Bern, Brett S. Phinney and David Goldberg point out that the first analysis in 2007 of a well-preserved, fossilized T. rex bone identified traces of seven distinct protein fragments, or peptides, from collagen. That material is one of the primary components of bone, tendons and other connective tissue. However, later studies disputed that finding, suggesting that it was a statistical fluke or the result of contamination from another laboratory sample.
The scientists describe reanalysis of the T. rex data and also report finding evidence of substances found in collagen. "In summary, we find nothing obviously wrong with the Tyrannosaurus rex [analysis from 2007]," the report states. "The identified peptides seem consistent with a sample containing old, quite possibly very ancient, bird-like bone, contaminated with only fairly explicable proteins. Hemoglobin and collagen are plausible proteins to find in fossil bone, because they are two of the most abundant proteins in bone and bone marrow."
American Chemical Society
American Chemical Society
Tyrannosaurus Rex Current Events and Tyrannosaurus Rex News RSSThe humble beginnings of a king
Tyrannosaurus rex and related large carnivorous dinosaurs together form the family Tyrannosauridae. A long forgotten fossil skull in the collections of the Natural History Museum in London has now provided crucial clues to the early stages of the lengthy evolutionary history of these fearsome predators.
New analyses of dinosaur growth may wipe out one-third of species
Paleontologists from the University of California, Berkeley, and the Museum of the Rockies have wiped out two species of dome-headed dinosaur, one of them named three years ago - with great fanfare - after Hogwarts, the school attended by Harry Potter.
Galaxy cluster smashes distance record
The most distant galaxy cluster yet has been discovered by combining data from NASA's Chandra X-ray Observatory and optical and infrared telescopes.
U of A researcher has rare evidence of dinosaur cannibalism
University of Alberta researcher Phil Bell has found 70 million year old evidence of dinosaur cannibalism.
Bizarre new horned tyrannosaur from Asia described
Now, just a few weeks after tiny, early Raptorex kriegsteini was unveiled, a new wrench has been thrown into the family tree of the tyrannosaurs.
Chicken-hearted tyrants
Two titans fighting a bloody battle - that often turns fatal for both of them. This is how big predatory dinosaurs like Tyrannosaurus are often depicted while hunting down their supposed prey: even larger herbivorous dinosaurs.
Duck-billed dinosaurs outgrew predators to survive
With long limbs and a soft body, the duck-billed hadrosaur had few defenses against predators such as tyrannosaurs. But new research on the bones of this plant-eating dinosaur suggests that it had at least one advantage: It grew to adulthood much faster than its predators, giving it superiority in size.
Great white's mighty bite revealed
Using sophisticated computer modelling techniques they have also calculated that the bite force of the great white's extinct relative, the gigantic fossil species Carcharodon megalodon (also known as Big Tooth) is the highest of all time, making it arguably the most formidable carnivore ever to have existed.
For the paper trail of life on Mars or other planets, find cellulose
Looking for evidence of life on Mars or other planets? Finding cellulose microfibers would be the next best thing to a close encounter, according to new research from the University of North Carolina at Chapel Hill.
Agonized death throes probable cause of open-mouthed, head-back pose of many dino fossils
The peculiar pose of many fossilized dinosaurs, with wide-open mouth, head thrown back and recurved tail, likely results from the agonized death throes typical of brain damage and asphyxiation, according to two paleontologists.
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Tyrannosaurus Rex by Schleich North America Great for Kids. This item is not only a toy, but an educational series of hand painted replicas that reveals the prehistoric world. Each model comes equipped with a booklet containing its scientific data and a figure of a human in the same scale. Manufact |
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Tyrannosaurus, moving by Schleich North America This handpainted Tyrannosaurus Rex model is great for play and collecting. Created in close cooperation with the Natural History Museum of the Humboldt-University Berlin. Scale 1:40. |
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Unicorn by Tyrannosaurus Rex Pre-glam rock era T. Rex (then Tyrannosaurus Rex) re-issue their early albums including this, 'Unicorn'. Considered a cornerstone of the 60s British Underground along with The Soft Machine, Syd Barrett-era Pink Floyd, Cream, and the Jimi Hendrix Experience, this expanded edition includes original artwork, lyrics, sleevenotes by Marc Bolan biographer Mark Paytress, rare photographs by Peter Sanders, and bonus tracks with stereo recordings and outtakes. First pressings come with a slipcase. Universal. 2004. |
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Tyrannosaurus by Papo Tyrannosaurus |
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Educational Insights Tyrannosaurus Rex (GeoSafari Dino Digs) by Educational Insights This series of four fascinating paleontology sets lets students excavate and assemble complete dinosaur skeletons from 'fossilized' rock! Features include excavation tool, dust brush, wax adhesive, and 32-page instructions with facts and stories about each dinosaur. |
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