Fig. 8 in Three-dimensional micro- and nanostructural characteristics of the scleractinian coral skeleton: A biocalcification proxy

Fig. 8. "Ceratotrochus" magnaghii Cecchini, 1914. A. ZPALH.23/4 in oblique view (A 1); distal septal edge enlarged in A2. A3. "Patches of microcrystals" at growing septal edge (RAF). B. ZPALH.23/5. Polished and etched septum sectioned transversely with dRAF that appear to be com − posed of homogenous "microcrystalline" material, SEM micrograph. C. TL M (C1, C2) and MFM (C3) micrographs of longitudinally sectioned septum ZPALH.23/6 in RAF plane. Organic and mineral phases regularly alternate (grayscale enlargement in C 2); brownish organic dRAF components (C1) stained with acridine orange, fluoresce (C2) with bright−green light. Seemingly homogenous dRAF in transverse section (B), sectioned longitudinally is composed of elongated units spaced ca. 5–7 µm (red arrows in C1). Growth direction of septum indicates black arrow. A. Recent, deep−water specimen, SEAMOUNT 2 cruise, Stat. DW 279, 33°55.60'N, 28°23.70'W, 805 m. B, C. Recent, shallow−water specimen from Mediterranean (Marseille, Riou−Grand Conglu submarine cave), 50 m.