Britannica
Sources used in this answer
Where have most Tyrannosaurus rex fossils been found?
Created from Britannica articles
using AI.
AI can make mistakes, so verify using Britannica articles.
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.
Most Tyrannosaurus rex fossils have been discovered in western North America, particularly within the Hell Creek Formation located in Garfield county, Montana, and surrounding areas of the United States.12
Additional specimens have been recovered from other sites, including the Lance Formation in Wyoming, the Cheyenne River Sioux reservation in South Dakota, and the Frenchman Formation in Saskatchewan, Canada.2