Spinosaurus bone cross section (IMAGE) University of Chicago Caption The Spinosaurus thigh bone (left) was thin sectioned with a diamond saw (middle) to reveal under magnification its bone structure (right). Credit Stephanie Baumgart and Evan Saitta Usage Restrictions Please credit original authors License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.