Fig. 6 in Fused and vaulted nasals of tyrannosaurid dinosaurs: Implications for cranial strength and feeding mechanics

Fig. 6. Geometry used to compute the area, centroid, and second moments of area of a nasal cross−section (from middle region of fused Tyrannosaurus rex nasals: TMP 98.86.01; cast of BHI 2033). A. Decomposition of the cross−section to compute area by summing areas of triangles. Small "+"s are centroids of individual triangles. Large "+" is the centroid for the complete section. B. Cross−section partitioned into horizontal and vertical strips of known area and position, used to calculate second moments of area.