Figure 3. Distributions of von Mises stress in modeled sagittal sections of the dome of Homalocephale colathoceros. Stress is high immediately below point impacts (1), but well within the limits of bone strength (200-300 MPa). With high-energy distributed impacts, relatively high stress is evident adjacent to the endocranial cavity, (2), but in less strenuous collisions stress diminishes markedly before reaching the braincase (3, 4).