Thomas the T. rex

Thomas is the sub-adult Tyrannosaurus rex in the museum's T. rex growth series in Dinosaur Hall, displayed with a baby and a juvenile, the only series of its kind in the world. Dinosaur Institute crews led by Dr. Luis Chiappe excavated him from 66-million-year-old rocks in southeastern Montana between 2003 and 2005. With nearly 65 percent of his skeleton preserved, he is one of the most complete T. rex skeletons known.

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