FIGURE 2 in Morphological distinction of the Ophioderma Müller & Troschel, 1840 species (Echinodermata: Ophiuroidea: Ophiacanthida: Ophiodermatidae) from the Algerian west coast

FIGURE 2. Measurements taken from dorsal (A) and ventral (B) side of Ophioderma species. IW: Interraduis Width. AW: Arm Width. d1 and d2: large and small disc diameters. M: Madreporite. W: Width and L: Length of oral shield and madreporite. OS: Oral Shied. AdShL: Adoral Shield Length. GS: Genital Slit. VAP: Ventral Arm Plates. Small black narrow: white spots on VAP. Scale bare = 5 mm