A semi-complete skull of an adult Edmontosaurus at Montana State’s Museum of the Rockies preserves a fleeting moment from the Late Cretaceous: a tyrannosaur biting into a duck-billed dinosaur’s face. A Tyrannosaurus attacking an adult Edmontosaurus. Image credit: Jenn Hall. The damaged Edmontosaurus skull was found in 2005 in the Hell Creek Formation of eastern Montana. The fossil is now housed in the paleontology collection at Museum of the Rockies,...
