<I>Tyrannosaurus rex</i> (IMAGE)

American Museum of Natural History

<I>Tyrannosaurus rex</i>

Caption

Tyrannosaurus rex, shown in this artistic illustration, is part of the carnivorous groups of dinosaurs that, according to new research, maintained a stable level of biodiversity leading up to the mass extinction at the end of the Cretaceous.

Credit

AMNH/J. Brougham

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