Courtesy U.S. Army Corps of Engineers, Omaha District and Museum of the Rockies, Montana State University
In 1988, rancher Kathy Wankel discovered this Tyrannosaurus specimen while hiking on land managed by the U.S. Army Corps of Engineers. After a little digging with a garden shovel and a jackknife, she unearthed the first complete T. rex arm ever found. Dr. Jack Horner of the Museum of the Rockies led the mission to excavate the rest. This specimen was loaned to the Smithsonian in 2014 for 50 years.