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Instructions: 1. cut out circle 2. fold in half, then thirds (along the grey lines) 3. cut out grey areas (use hole punch for circles) 4. unfold and enjoy! Tyranosaurus rex dinosaurs were 13 feet tall and 40 feet long - that’s about the size of a large moving truck! Dr. Mary Schweitzer of NC State found the first evidence of collegen (a protein) from a T. rex bone. That protein indicated the closest living relatives of T.rex are chickens and ostriches. Think about that next time you bite a chicken nugget!