Figure 5. Body plan reconstruction. A in Tentacular nature of the 'column' of the Cambrian diploblastic Xianguangia sinica

Figure 5. Body plan reconstruction. A, schematic drawing of the tentacle-sheath complex of Xianguangia. From left to right are shown the inside view, cross section and outside view. The tentacle consists of a proximal tentacle rod enveloped by a single outer sheath and a distal flexible portion. Ciliated pinnules emerge from tentacles laterally. B, lateral view of the whole-body shape with closed tentacle-sheath complexes.