Extended Data Fig. 4: Histological thin-section (plane polarized light) showing detail of the spine.
From: Bizarre dermal armour suggests the first African ankylosaur
A vascular channel can be observed in the top left of the image. The woven bone matrix of the cortex is dominated by primary osteons. Scattered secondary osteons can be observed in the mid and inner cortex. Large resorption cavities lined with lamellar bone can be observed in the trabecular bone of the core (top right). Red arrows indicate growth (=resting) lines.
