Fig. 3 in Ontogenetic stages of ceratopsian dinosaur Psittacosaurus in bone histology

Fig. 3. Bone microstructure in juvenile ceratopsian dinosaur Psittacosaurus lujiatunensis Zhou, Gao, Fox, and Chen, 2006 (IVPP V14341.1) from western Liaoning, China, Early Cretaceous. A–C. Mid-diaphyseal transverse section of right tibia (A), the outer most cortex (B), the inner most cortex (C); photographs in regular transmitted light (A1–C1), elliptically polarized light (A2–C2), crossed plane-polarized light (B3, C3); line drawing (A3) showing longitudinal vascular canals (navy), reticular vascular canals (green), radial vascular canals (red), and LAGs (brown lines).