Fig. 21 in Boring bryozoans: an investigation into the endolithic bryozoan family Penetrantiidae

Fig. 21 Stereomicroscopic images of whole mounts of gonozooids of six different penetrantiids. a Penetrantia concharum from Sweden. b–c P. irregularis from southern New Zealand. d P. parva from northern New Zealand. e P. parva from southern New Zealand. f P. cf. parva from New Caledonia. g P. clionoides from Guam. h Penetrantia sp. from Japan. bch brood chamber, e embryo, ooc oocyte, op operculum, rm retractor muscle, rp remains of polypide, st stolon