Figure 2 in The first record of fossilized soft parts in ossified tendons and implications for the understanding of tendon mineralization

Figure 2. Light microscopy and SEM of petrographic thin sections and etched surfaces of fossilized ornithischian tendons of Homalocephale calathocercos: A, B, general view of the cross-sectioned tendon under transmitted normal (A) and polarized (B) light; C, close-up of the middle of the tendon showing a lattice-like pattern of the coarse collagenous fibre bundles under polarized light; D, close-up of secondary osteons with poorly marked cement lines; E, close-up of the periphery of the tendon under normal light; F, longitudinal section of the tendon under polarized light showing the herringbone-like pattern; G, cross-sectioned tendon in the SEM. Green arrows mark primary osteons, yellow arrow points bone cell lacunae, red asterisk indicate secondary osteons.