Fig. 8

Newly formed juveniles of Phoronopsis harmeri stained for phalloidin. Stage about 40 min after the onset of metamorphosis. a Whole animal. According to specific organization of the muscles, juvenile body is subdivided into the lophophore (lph) with tentacles (t), anterior trunk part (atp), posterior trunk part (ptp), and ampulla (am). b Anterior part of the body: completely formed epistome (epi) is well visible above the mouth (m)