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Tyrannosaurs hunted in groups

Tyrannosaurs hunted in groups

TUMBLER RIDGE, British Columbia, July 24 (UPI) --New evidence -- three sets of dinosaur footprints -- suggest Tyrannosaurs moved and hunted in packs, say scientists in Canada.
Brooks Hays
Creation Museum touts new dino skeleton as proof of Biblical flood

Creation Museum touts new dino skeleton as proof of Biblical flood

PETERSBURG, Ky., May 23 (UPI) --The Creation Museum in Ky. is set to open an unusual new exhibit this weekend -- a dinosaur skeleton, named Ebenezer. He's proof, they say, of a Biblical flood.
Brooks Hays
Dinosaur throws out first pitch at Padres-Royals game

Dinosaur throws out first pitch at Padres-Royals game

SAN DIEGO, May 9 (UPI) --Baby Tyrannosaurus rex throws out first pitch in San Diego prior to Padres-Royals game.
Evan Bleier
New dino species 'Pinocchio rex' discovered by scientists

New dino species 'Pinocchio rex' discovered by scientists

EDINBURGH, Scotland, May 7 (UPI) -- Paleontologists have confirmed the discovery of a new dinosaur species: a Tyrannosaur with a long, pointy snout. Naturally, scientists named it "Pinocchio rex."
Brooks Hays
Scientists unearth pygmy T. rex dinosaur in Alaska

Scientists unearth pygmy T. rex dinosaur in Alaska

March 13 (UPI) -- Paleontologists have confirmed a new species of dinosaur, a miniature cousin of the Tyrannosaur, which roamed the Arctic.
Brooks Hays
'Steak knife' teeth made early dinosaurs top food chain predators

'Steak knife' teeth made early dinosaurs top food chain predators

TORONTO, Feb. 7 (UPI) -- The first top carnivore predator to walk on land developed "steak-knife" teeth allowing it to eat prey much larger than itself, Canadian scientists say.
New dinosaur giant, called top predator, found in Utah

New dinosaur giant, called top predator, found in Utah

CHICAGO, Nov. 22 (UPI) -- A dinosaur discovered in Utah, described as a top predator at 30 feet and 4 tons, is the first of its kind to be found in North America, paleontologists say.
Newly found predatory dinosaur dubbed the 'king of gore'

Newly found predatory dinosaur dubbed the 'king of gore'

SALT LAKE CITY, Nov. 6 (UPI) -- A newly discovered predatory dinosaur dubbed the "king of gore" reveals the origins of T. rex but evolved millions of years earlier, U.S. paleontologists say.
Discovery of 'Bandit' dinosaur fills in Madagascar fossil record

Discovery of 'Bandit' dinosaur fills in Madagascar fossil record

CLAREMONT, Calif., April 19 (UPI) -- Paleontologists say the first new dinosaur fossil found in Madagascar in nearly a decade has helped fill in a big hole in the island country's dinosaur record.

UPI NewsTrack Science and Technology News

Apple rumored to be considering an iWatch ... Ancient 'Megapiranha' had strongest bite ... China opens its version of GPS to public ... Antarctic science drill project called off ... Science and Technology news from UPI.
Ancient 'Megapiranha' had strongest bite

Ancient 'Megapiranha' had strongest bite

SEATTLE, Dec. 27 (UPI) -- An ancient "Megapiranha" weighing around 20 pounds delivered a bite with a force more fierce than even the toothy Tyrannosaurus rex, a U.S. researcher says.

Rocks reveal where dinosaurs lived

NEW HAVEN, Conn., Oct. 13 (UPI) -- U.S. scientists say they can learn a lot about where dinosaurs lived by looking not at their fossilized bones but at the rocks in which the bones were found.
T. rex tracks preserved in New Mexico

T. rex tracks preserved in New Mexico

CIMARRON, N.M., July 13 (UPI) -- A second full footprint of a Tyrannosaurus rex has been discovered on the remote Philmont Boy Scout Ranch near Cimarron, N.M., a paleontologist said.

Scientists find soft tissue in T. rex bone

RALEIGH, N.C., April 30 (UPI) -- A team of researchers led by a North Carolina State University scientist has found soft tissue on a dinosaur skeleton.

Dinosaur DNA linked to chickens, ostriches

CAMBRIDGE, Mass., April 26 (UPI) -- U.S. researchers said genetic sequencing of a Tyrannosaurus rex protein shows a common ancestry with chickens, ostriches and alligators.
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T. Rex
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Tyrannosaurus (pronounced /tɨˌrænɵˈsɔrəs/ or /taɪˌrænɵˈsɔrəs/, meaning 'tyrant lizard') from the Greek words τυράννος (tyrannos, meaning "tyrant") and σαύρος' (sauros, meaning "lizard"), is a genus of theropod dinosaur. The species Tyrannosaurus rex ('rex' meaning 'king' in Latin), commonly abbreviated to T. rex, is a fixture in popular culture. It lived throughout what is now western North America, with a much wider range than other tyrannosaurids. Fossils are found in a variety of rock formations dating to the last two million years of the Cretaceous Period, 67 to 65.5 million years ago. It was among the last non-avian dinosaurs to exist prior to the Cretaceous–Tertiary extinction event.

Like other tyrannosaurids, Tyrannosaurus was a bipedal carnivore with a massive skull balanced by a long, heavy tail. Relative to the large and powerful hindlimbs, Tyrannosaurus forelimbs were small, though unusually powerful for their size, and bore two clawed digits. Although other theropods rivaled or exceeded Tyrannosaurus rex in size, it was the largest known tyrannosaurid and one of the largest known land predators, measuring up to 12.8 m (42 ft) in length, up to 4 metres (13 ft) tall at the hips, and up to 6.8 metric tons (7.5 short tons) in weight. By far the largest carnivore in its environment, Tyrannosaurus rex may have been an apex predator, preying upon hadrosaurs and ceratopsians, although some experts have suggested it was primarily a scavenger. The debate over Tyrannosaurus as apex predator or scavenger is among the longest running debates in paleontology.

More than 30 specimens of Tyrannosaurus rex have been identified, some of which are nearly complete skeletons. Soft tissue and proteins have been reported in at least one of these specimens. The abundance of fossil material has allowed significant research into many aspects of its biology, including life history and biomechanics. The feeding habits, physiology and potential speed of Tyrannosaurus rex are a few subjects of debate. Its taxonomy is also controversial, with some scientists considering Tarbosaurus bataar from Asia to represent a second species of Tyrannosaurus and others maintaining Tarbosaurus as a separate genus. Several other genera of North American tyrannosaurids have also been synonymized with Tyrannosaurus.

This article is licensed under the GNU Free Documentation License.
It uses material from the Wikipedia article "T. Rex."
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