I know the biggest dinosaur to ever live is the Argentinosaurus from Argentina. This animal could grow to 90 tons, rivaling the weight of 3 loaded trucks. Its length could reach 60 meters, so it was really huge. It was his femur: :) This specimen, the femur of which is shown in the picture, did not have the dimensions described above, but it was the largest dinosaur specimen excavated. [img alt_text = 'argentinosaurus' description = 'Image source: sg.hu'] https:///wp-content/uploads/2017/01/femur_640x282.jpg [/ img]