Figure 8

Pattern of sclerite and aragonite crystal orientation for the scleritome of A. gorgonophila, shown with color-coded EBSD maps and corresponding pole figures (A–E). We show results of two EBSD-scans (A–D, and E). Sclerite morphological, long axis orientation is little structured (A). Accordingly, aragonite c-axis orientation is also little structured and cannot be assigned to, e.g. different layers of sclerites with a specific sclerite orientation, or some other arrangement pattern. According to our results, sclerite and aragonite crystal organization within the scleritome of A. gorgonophila is significantly less organized, as it is the case for scleritome of D. sarsii (Fig. 9) or that of S. margaritacea (Fig. 10).