Instead,it belonged to a tyrannosaurid species that lived many millions of years before its T.Rex relative.

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And,they believed T.rex could eat up to two hundred thirty kilograms of meat in one bite.

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But now it seems that T.rex may not have been as fierce as scientists once believed.

VOA: special.2009.09.01

For example, the small arms on T.Rex did not develop as the creature got bigger.

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Professor Sereno says Raptorex Kriegsteini was probably just as effective at killing as T.Rex.

VOA: special.2009.10.13

This week,we tell about how thin monkeys live longer than fat ones, how aspirin can help colon cancer patients and some new information about Tyrannosaurus rex.

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Mister Hone says the records suggest that Tyrannosaurus rex was like many other predators.

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Many children's books show T.rex fighting bloody battles with other huge dinosaurs.

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But the creature you are imagining is only one-hundredth of T.Rex's size.

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There are some signs of conflict between T-rex and other large dinosaurs.

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T.rex was one of the largest meat-eating dinosaurs that ever lived.

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"Tyrannosaurus" means "tyrant lizard" and "rex" is Latin for "king."

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T.Rex had a big head, long legs and small arms.

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T.Rex lived between sixty-five and eighty-five million years ago.

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This describes Raptorex Kriegsteini a distant relative of T.Rex.

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Now,try to imagine a dinosaur that looked like T.Rex.

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Raptorex was not a T.Rex.

VOA: special.2009.10.13