Haeckel, 1881, emend. Riedel, 1967
The small, rudimentary cephalis is usually totally immersed in the large and well-developed thorax (types of cephalis). Abdomen absent or rudimentary.
Carpocanium spp. group?
Carpocanium spp. group? 2
Carpocanium spp. group? 3
Carpocanium spp. group? 4
Carpocanium spp. group? ov
The following species of this family are treated in the present volume:
Carpocanium spp.