Coelagalma Haeckel, 1887 (original description)
Coelodasea Haeckel, 1887 (original description)
Coelodecas Haeckel, 1887 (original description)
Coelodoras Haeckel, 1887 (original description)
Coelographis Haeckel, 1852 (original description)
Coeloplegma Haeckel, 1887 (original description)
Coelospathis Haeckel, 1887 (original description)
Coelostylus Haeckel, 1887 (original description)
Coelotholus Haeckel, 1887 (original description)
Corocalyptra Haeckel, 1887 (original description)
Cortinetta Haeckel, 1887 (original description)
Craspedilium Haeckel, 1887 (original description)
Cyrtocapsella Haeckel, 1887 † (original description)
Cyrtocapsoma Haeckel, 1887 (original description)
Cyrtocorys Haeckel, 1887 (original description)
Cyrtolagena Haeckel, 1887 (original description)
Cyrtophormiscus Haeckel, 1887 (original description)
Cyrtophormium Haeckel, 1887 (original description)
Cyrtostrobus Haeckel, 1887 (original description)
Cystophormis Haeckel, 1887 (original description)
Haliphormis Haeckel, 1887 † accepted as Haliphormartidium Campbell, 1951 † (original description)
Lithobotrys Haeckel, 1887 † accepted as Glycobotrys Campbell, 1951 † (original description)