High resolution image of Figure 2(a). Osteohistological section of small tibia (MBLUZ P.5021), from a juvenile individual: (a) complete section in normal-polarized transmitted light and (b) close-up of cortex in cross-polarized light using lambda compensator. The entire compacta consists of parallel-fibred bone subdivided by two growth annuli (marked by arrowheads). The bone tissue is vascularized by simple primary canals and woven bone is absent.