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Tyrannosaurus in Medical News

Reexamination of T. rex verifies disputed biochemical remains

... A new analysis of the remains of a tyrannosaurus rex (T. rex) that roamed Earth 68 million years ago has confirmed traces o...s found in collagen. "In summary, we find nothing obviously wrong with the tyrannosaurus rex [analysis from 2007]," the report states. "The identified peptides se...

Dinos may Have Died in Agonizing Death Throes of Asphyxiation

...n back, jaws open, back and tail reflexed backward and limbs contracted". Dinosaurs and their relatives, ranging from the flying pterosaurs to tyrannosaurus rex, as well as many early mammals, have been found exhibiting this posture. Till now, the explanation usually given by palaeontologists is th...
Tyrannosaurus in Biological News

Protein fragments sequenced in 68 million-year-old Tyrannosaurus rex

In a venture once thought to lie outside the reach of science, researchers from Harvard Medical School and Beth Israel Deaconess Medical Center have captured and sequenced tiny pieces of collagen protein from a 68 million-year-old Tyrannosaurus rex. The protein fragments—seven in all—appear to most...

FSU biologist says new dinosaur is oldest cousin of Tyrannosaurus rex

Florida State University paleobiologist Gregory M. Erickson sliced up some ancient dinosaur bones uncovered in China to help an international team of scientists identify a new genus and species. Despite striking skeletal differences and only subtle similarities, the FSU researcher determined that t...

Discovery raises new doubts about dinosaur-bird links

...the ancient past dinosaurs. The implication, the researchers said, is that birds almost certainly did not descend from theropod dinosaurs, such as tyrannosaurus or allosaurus. The findings add to a growing body of evidence in the past two decades that challenge some of the most widely-held beliefs about animal...

CT scans reveal that dinosaurs were airheads

...tmer, Chang Professor of Paleontology in Ohio University's College of Osteopathic Medicine. Witmer and Ridgely examined skulls from two predators, tyrannosaurus rex and Majungasaurus, and two ankylosaurian dinosaurs, Panoplosaurus and Euoplocephalus, both plant eaters with armored bodies and short snouts. For ...

'A dinosaur dance floor'

... long and have three toes and a heel. Eubrontes tracks are believed to have been made by upright-walking dinosaurs 16 to 20 feet long, or smaller than tyrannosaurus rex. Grallator tracks are about 4 inches to 7 inches long, are three-toed and were left by small dinosaurs only a few feet tall. Sauropodomorp...

Mass extinctions and the evolution of dinosaurs

...after they originated, but that their rise was a slow and complicated event, and driven by two mass extinctions. "The sheer size of dinosaurs like tyrannosaurus makes us think there was something special about these animals that preordained them for success right from the beginning," Brusatte said. "However, o...

America's smallest dinosaur uncovered

...pecialized in consuming termites by using its small but powerful forelimbs to tear into logs. "Proportionately, the forelimbs are shorter than in a tyrannosaurus but they are powerfully-built, so they seem to have served a purpose," Longrich said. "They are built for digging but too short to burrow, so we think...

Great white's mighty bite revealed

...was an active predator of large whales that immobilised its huge prey by biting off their tail and flippers before feeding at will. A comparison of tyrannosaurus rex with megalodon suggests that the great Tyrant Lizard was no match for the giant shark. " Estimates of maximum bite force for T. rex are around 3.1...

Dinosaur diggers bring mobile lab, new techniques to Eastern Montana

...Schweitzer discovered a few years ago in the specimen "MOR 1125," dubbed B. Rex, found near Jordan, Mont. Schweitzer also found tissue that showed the tyrannosaurus rex was an egg-laying female. Degradation began, however, as soon as field crews removed fossils from the ground and disrupted their equilibrium, ...

Genetic sequencing of protein from T. rex bone confirms dinosaurs' link to birds

...at on the theory that dinosaurs' closest living relatives are modern-day birds. Molecular analysis, or genetic sequencing, of a 68-million-year-old tyrannosaurus rex protein from the dinosaur's femur confirms that T. rex shares a common ancestry with chickens, ostriches, and to a lesser extent, alligators. T...
Tyrannosaurus in Biological Technology

Scientists say sabercat bit like a pussycat

... In public imagination, the sabre-toothed cat Smilodon ranks alongside tyrannosaurus rex as the ultimate killing machine. Powerfully built, with upper canines like knives, Smilodon was a fearsome predator of Ice-Age America's lost gian...
Tyrannosaurus in Biological Definition

Carnivore

..., some digest nematodes and other small invertebrates . Many dinosaurs and other extinct animals were carnivores, for example the well known tyrannosaurus rex and sabretooth tiger . See also cannibalism insectivore Compare and contrast herbivore omnivore ...
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