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Correlative microscopy of the constituents of a dinosaur rib fossil and hosting mudstone: Implications on diagenesis and fossil preservation

Fig 3

EPMA mapping of the rib bone adjacent to the boundary.

Due to calcite and calcium content in the bone region, the distribution and concentration of Ca is very high. The most striking feature is that miniscule pores within the bone matrix and some of the smaller vascular channels are occupied with illite (Al, Si, K, Mg, Fe) instead of calcite. BEI = backscattered electron image.

Fig 3