Fig. 14 in Boring bryozoans: an investigation into the endolithic bryozoan family Penetrantiidae

Fig. 14 Histological semi thin cross sections through the lophophore and tentacles of the autozooids of six different penetrantiids. a Penetrantia concharum from Sweden. b P. cf. concharum from France. c P. parva from northern New Zealand. d Detail of cross section through tentacles of P. parva from northern New Zealand. e P. parva from southern New Zealand. f P. irregularis from southern New Zealand. g P. clionoides from Guam. h Penetrantia sp. from Japan. at atrium, bc body cavity, cae caecum, es esophagus, ftc frontal cilia, lc lateral cilia, pv proventriculus, t tentacle, ts tentacle sheath