FIGURE 13 in Dendrochirotida (Echinodermata: Holothuroidea) from the northeastern coast of Brazil

FIGURE 13. Thyone brasiliana sp. nov., UFPB.ECH-2121. A, external view of animal; B, dorsal view of calcareous ring; C, lateral view of the calcareous ring; D, ventral view of the calcareous ring; E, dorsal view of the calcareous ring from paratype (UFPB.ECH-2122); F, rosette from tentacles; G, small rod from tentacles; H, large rod from tentacles; I, large elongated plates from tentacles. Where, IRd = dorsal interradial plate; Rd = dorsal radial plate; IRL= lateral interradial plate; RL = lateral radial plate; IRv = ventral interradial plate; Rv = ventral radial plate; PA = point of attachment of the retractor muscles and notch for the passage of radial nerves.