FIGURE 2 in Additions to the morphology of the Phyllophoridae and the Sclerodactylidae. I. Type species of Phyllophorella, Selenkiella, Cladolella and Clarkiella, with the description a new species of Thorsonia (Holothuroidea: Dendrochirotida)

FIGURE 2. Phyllophorella robusta (Heding & Panning, 1954), holotype (ZMUC-HOL 249). (a) specimen in lateral view; (b) muscular system and gonads; (c) Polian vesicle and madreporite and (d) photograph of the calcareous ring in outer view. Abbreviations: RM, retractor muscle, CM, circular muscle, LM, longitudinal muscle, GO, gonads, PV, Polian vesicle and M, madreporite.