Asteroschema tubiferum Matsumoto, 1911 (IDSSE-EEB-SW0078) A lateral arm plate B outer arm spine (middle) C inner arm spine (middle) D arm spine (distal) E skin from dorsal arm base (granular ossicles) F–J vertebrae F proximal view G distal view H lateral view I dorsal view J ventral view. Abbreviations: d dorsal, dist distal, lac lateral ambulacral canals, mo muscle opening, no nerve opening, pb podial basin, prox proximal, st secondary teeth, v ventral. Scale bars: 800 µm (F, G, J): 500 µm (B, H, I); 300 µm (A, C–E).