Fig. 15
From: Comparative morphology of the nervous system in three phylactolaemate bryozoans
Simplified schemes of lophophore innervation in Fredericella sultana (a) and Cristatella-Plumatella (b) based on staining with antibodies against acetylated tubulin. Dashed line corresponds to the fronto-abfrontal (oral-anal) axis. In A only basal parts of tentacles are shown. In B only tentacle bases are shown on the internal sides of lophophore arms. Abbreviations: cnr, circumpharyngeal nerve ring; dn, distal branches of main radial nerve; g, cerebral ganglion; lh, lophophore nerve tract (horn); m, mouth; mrn, main radial nerve