FIGURE 4 in Taxonomy of the genus Thyonella (Holothuroidea: Dendrochirotida), with mention of the first record of T. sabanillaensis from the southwestern Atlantic Ocean

FIGURE 4. Thyonella sabanillaensis (Deichmann, 1930) (EH-IBZ/UFRJ 144). SEM images of the ossicles: (A) four-holed button from body wall; (B) smooth plate from body wall; (C–D) knobbed plate from body wall; cup in dorsal (E) and ventral (F) view; (G) button from introvert, (H–I) rods from tentacles and (J) rods from tube feet; (K) triangular plate from body papillae; (L) anal plate. Scale bars: A, 50 µm; B, 100 µm; C, 40 µm; D, 100 µm; E–G, 20 µm; H–L, 100 µm