Figure 1 in The Testaria concept (Polyplacophora + Conchifera) updated

Figure 1. Relationships of the pericardium, pericardioducts and mantle cavity. (A) Polyplacophora (Neoloricata); (B) Solenogastres; (C) Caudofoveata (female). At left, schematic views from lateral, at right schematic oblique cross sections (as indicated at left by line x) projected from behind (after Salvini-Plawen 2006). ct, ctenidium; em, emunctorium (excretory portion of pericardioduct); go, gonad; md, glandular duct (of unknown homology); ml, enrolling muscle; mt, mucous tract of pallial groove/mantle cavity (black); pc, pericardium; pd, pericardioduct; re, rectum; so, terminal (osphradial) sense organ.