 After a long debate, the enigmatic fossils were later confirmed to belong to a giant theropod dinosaur.At some point, Maleev analyzed "Tarbosaurus" brains by cutting open the fossilized braincases with a diamond saw.In contrast to the risky methods used by Maleev, modern researchers use computer tomography scans and 3D reconstruction software (CT scans) to visualize the interior of dinosaur endocrania, thus eliminating the need to damage valuable specimens.