Faceleinidae
Nudibranchs
Cephalaspidea
Anaspidea
Pleurobranchida
Sacoglossa
Nudibranchia
Gymnodorididae
Polyceridae
Hexabranchidae
Discodoridae
Dorididae
Halgerdidae
Kentrodorididae
Platydorididae
Chromodorididae
Dendrodorididae
Phyllidiidae
Tritonidae
Arminidae
Flabellinidae
Facelinidae
Glaucidae