Christian Sidor, (R) Burke Museum curator of vertebrate paleontology, and Brandon Peecook, University of Washington graduate student, show the size and placement of the fossil fragment compared to the cast of a Daspletosaurusfemur, in this undated handout photo provided by...

80-million-year-old dinosaur bone found

Scientists in Washington state find the partial left femur of a two-legged carnivorous dinosaur