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Triceratops reigns alone again

Fossil comparison upholds dinosaur as separate type

Triceratops may no longer have an identity crisis. As paleontologists lock horns on whether these dinosaurs were just baby versions of the larger Torosaurus, the latest clues suggest the two were indeed separate kinds of dinosaurs.

A new study reveals immature and adult examples of both Triceratops and Torosaurus. “I don’t see any clear fossil evidence that one dinosaur turned into the other,” says Nicholas Longrich. He and fellow Yale paleontologist Daniel Field make their case online February 29 in PLoS ONE.

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