Fig. 5
From: Bone microstructure of the basal anomodont Suminia getmanovi supports its arboreal lifestyle
Osteohistology of KPM 20/99 right tibia (A, C, E) and fibula (B, D, F). (A) Virtual transverse section of right tibia. The cortex is well-vascularized. (B) Virtual transverse section of fibula. The cortex is well vascularized and the longitudinal canals are organized in radial rows. (C) Partial cross-section of right tibia (in polarized light with lambda compensator). The preserved cortex is mostly parallel-fibered with a reticular vascularization. (D) Cross-section of fibula (in polarized light with lambda compensator). Depending on the area of the section, the periosteal cortex is formed of a well-vascularized parallel-fibered bone matrix or a woven parallel-complex. Vascular canals have a preferential radial or longitudinal orientation. (E) Close up of cortex in the right tibia (in polarized light with lambda compensator) mostly composed of parallel-fibered bone tissue (PFB). Note the slight decrease in vascularization and osteocyte lacuna density towards the bone periphery. The endosteal margin is resorptive and secondary remodeling is limited. (F) Close up of the cortex in the fibula (in polarized light with lambda compensator). Note the slight decrease in vascularization and osteocyte lacuna density towards the bone periphery. The endosteal margin is resorptive and secondary remodeling is limited.
