Fig. 4

a–c Late stages of morphogenesis in Parasincirra sinica n. sp. after protargol staining. Ventral (a, b) and dorsal (c) views, to show the frontoventral-transverse cirral anlagen differentiating into cirri, transverse cirri migrating into their final position (arrows), the old adoral zone of membranelles have been rebuilt (arrowheads). LMA left marginal anlagen, LMR left marginal row, RMA right marginal anlagen, RMR right marginal row, Ma macronuclear nodules, Mi micronuclei, 1–3 dorsal kineties anlagen 1–3. Scale bars: 60 μm. The images of this figure we have used are freely available to use