Mighty T. rex Killed by Lowly Parasite, Study Suggests

A reconstruction of the Trichomonas-like infection of the T. rex commonly known as "Peck's Rex." Note the yellowing at the back of the mouth and the lesions in the jaw that penetrate the full thickness of the bone. Credit: Chris Glen, University of Queensland

From Live Science:

The famous dinosaur known as Sue — the largest, most complete and best preserved T. rex specimen ever found — might have been killed by a disease that afflicts birds even today, scientists now suggest.

The remains of Sue, a star attraction of the Field Museum in Chicago, possess holes in her jaw that some believed were battle scars, the result of bloody combat with another dinosaur, possibly another T. rex.

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