Figure 2 in The Testaria concept (Polyplacophora + Conchifera) updated

Figure 2. Formation of seven middorsal transverse rows of sclerites during development. (A, B) larva of Caudofoveata, Chaetoderma cf. nitidulum (after Gustafson in Nielsen et al. 2007) in (A) ventral view; (B) dorsal view; (C, D) metamorphosing Solenogastres, Nematomenia banyulensis (after Pruvot 1890; Salvini-Plawen 1972) in (C) lateral view; and (D) dorsal view (reconstructed); (E) dorsal view of post-metamorphic Polyplacophora, Lepidochitona corrugata (after Kowalevsky 1883). oc, residary ocellus; sd, dorsal sclerites in seven transverse rows; sg, general mantle sclerites.