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Which rock formation has produced many Tyrannosaurus rex fossils?
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tyrannosaur
The fossilized remains of Sue, the most complete Tyrannosaurus rex skeleton in the world, on display at the Field Museum of Natural History, Chicago.
Many Tyrannosaurus rex fossils have been discovered in the Hell Creek Formation, a rock formation dating to the end of the Cretaceous Period. Located in parts of Montana, North Dakota, South Dakota, and Wyoming, this formation has yielded numerous specimens since the early 20th century, including famous finds such as the "Wankel" T. rex and the nearly complete skeleton known as "Sue."12