Figure 3

XRD pattern and Raman analysis of skeletons. (A) The XRD pattern of 2θ scan identifies aragonite and Mg-calcite crystals formation in original skeletons. Green dashed arrows show chitin bands in the calcite planes. (B) Raman analysis of L. foecundum indicates aragonite minerals in skeletons. Raman analysis was conducted throughout skeletons with many specific spots.