AMNH (American Museum of Natural History) T. Rex" by Eqdoktor / CC BY 3.0

Meet Scotty, the New T. Rex Heavyweight Champion of the World

Mar 26, 2019

By Laura Geggel

The mightiest Tyrannosaurus rex on record is a behemoth named Scotty, who — during its lifetime on Earth about 65 million years ago — weighed a honking 19,555 lbs. (8,870 kilograms), or about as much as 6.5 Volkswagen Beetles, a new study finds.

Scotty was so massive, it edged out Sue, the famous T. rex at the Field Museum of Natural History in Chicago, as heavyweight champ.

In all, Scotty is about 880 lbs. (400 kg) heavier than Sue, “which is a lot by human standards, but not as much when you’re dealing with a tyrannosaur,” said study lead researcher Scott Persons, a paleontologist at the University of Alberta.

Researchers originally found Scotty in 1991, near the town of Eastend, Saskatchewan. But it took years to dig out and then prepare the dinosaur king, because the rock the fossils were embedded in was so “gosh darn hard,” Persons told Live Science. That rock — heavily cemented sandstone rich in iron — was part of the Frenchman Formation, which dates to the late Cretaceous period, from about 72 million to 65 million years ago.

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