The story of how Susan Hendrickson and her dog Gypsy stumbled upon the bones of largest and most complete Tyrannosaurus rex ever to be discovered. Follow the fossil's story as it is prepared by Field Museum scientists and discover what they have learned from studying Sue's skeleton. A high-interest story packed with educational information, photographs and illustrations.

48 pages.
Softcover.
Ages 4-8.
9" x 6".