Fig. 6 in Resolving the Ophioderma longicauda (Echinodermata: Ophiuroidea) cryptic species complex: five sisters, three of them new

Fig. 6. SEM images of skeletal elements of Ophioderma guineense Greef, 1882, Thiouriba, Senegal, from specimen of 11.7 mm disc diameter (SMHN-178429). A. Radial shield external. B. Radial shield internal. C. Scale-free area magnified from Fig. 6A, white arrowheads point to granule sockets and pores, white arrows point to larger peripheral pores. D. Dental plate fragments. E–F. Adradial genital plate, two opposite lateral aspects. G. Abradial genital plate. H. Oral plate, abradial face I. Oral plate adradial face, black arrows point to oral papillae sockets and pores, white arrows point to granule socket pores. J. Arm vertebra proximal face. K. Arm vertebra distal face. L. Lateral arm plate, external face. M. Lateral arm plate, internal face. Abbreviations: dist = distal; dors = dorsal; prox = proximal; Sp = spurs; vent = ventral.