Fig. 6 in Ontogenetic stages of ceratopsian dinosaur Psittacosaurus in bone histology

Fig. 6. Bone microstructure in subadult ceratopsian dinosaur Psittacosaurus lujiatunensis Zhou, Gao, Fox, and Chen, 2006 from western Liaoning, China, Early Cretaceous. Mid-diaphyseal transverse section of right radius (IVPP V18344, A), left femur (IVPP V18344, B), left tibia (IVPP V14748, C), left fibula (IVPP V14748, D, E), left femur (IVPP 18344, F), left tibia (IVPP V18344, G). E–G show the endosteal bone (arrows). Photographs in regular transmitted light (A1–D1), elliptically polarized light (A2–D2, E–G); line drawings (A3–C3) showing longitudinal vascular canals (navy), reticular vascular canals (green), radial vascular canals (red), and LAGs (brown lines). Abbreviation: so, secondary osteons.