Figure 6 in A complex hyobranchial apparatus in a Cretaceous dinosaur and the antiquity of avian paraglossalia

Figure 6. Pinacosaurus grangeri (IGM 100/3186). A, associated left radius (ra) and fragment of ulna (ul); B, transverse thin section of the radius showing abundant longitudinally oriented vascular canals, crenulated periosteal margin, and the absence of growth lines. Tick marks indicate level of histological section. Dashed lines indicate missing bone.