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T. Rex's Southern Cousin

Wouldn't it be cool to have a dinosaur named after you? Car mechanic and dino fan Rubén Carolini knows the feeling. On a dinosaur hunt in Argentina, he discovered what may have been the world's largest meat-eating dinosaur. Scientists named it Giganotosaurus carolinii.

Flesh-eating dinosaurs belong to a category of dinosaurs called theropods. Discoveries of giant theropods are rare. For years the only known theropods were from the northern hemisphere. In the past 10 years, important discoveries have been made in the southern hemisphere, where Argentina is located.

So far, about 70% of the dinosaur's skeleton has been recovered. Scientists estimate that G. Carolinii was between 41 and 43 feet long and weighed six to eight tons. Tyrannosaurus rex weighed in at only five tons.

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