Asterostegus maini McKnight, 2003 (A–M IDSSE-EEB-SW0076 N–P IDSSE-EEB-SW0075) A dorsal view B center of dorsal disc C dorsal disc (distal end of radial shields) D ventral disc E, F oral frame G lateral disc H dorsal arm (proximal) I dorsal arm (distal) J lateral arm (proximal) K ventral arm (middle) L, M arm spines (distal) N oral frame O periphery of the disc P oral frame (small transparent ossicles). Abbreviations: as adoral shield, ars arm spine, go granular ossicle, gs genital slit, j jaw, mp median plate, oip oral interradial plate, rs radial shield, t teeth, tp tentacle pore, ts tentacle scale. Scale bars: 6 mm (A); 2 mm (B–H, N); 1 mm (I–K, O, P); 500 µm (L); 200 µm (M).