Acanthocorallium Haeckel, 1887 (original description)
Acanthocoronium Haeckel, 1887 (original description)
Acanthocorythium Haeckel, 1887 (original description)
Acanthocyrtis Haeckel, 1887 accepted as Phormostichoartus Campbell, 1951 (original description)
Acanthocystis Haeckel, 1887 (original description)
Acromelissa Haeckel, 1887 (original description)
Actinopyramis Haeckel, 1887 (original description)
Alacorys Haeckel, 1887 (original description)
Amphispyridium Haeckel, 1887 (original description)
Amphispyrium Haeckel, 1887 (original description)
Androspyris Haeckel, 1887 (original description)
Anthocyrtarium Haeckel, 1887 (original description)
Anthocyrtella Haeckel, 1887 † accepted as Anthocyrtis Ehrenberg, 1847 (original description)
Anthocyrtissa Haeckel, 1887 (original description)
Anthocyrtium Haeckel, 1887 (original description)
Anthocyrtoma Haeckel, 1887 (original description)
Anthocyrtonium Haeckel, 1887 (original description)
Anthocyrtura Haeckel, 1887 (original description)
Anthocyrturium Haeckel, 1887 (original description)
Apocubus Haeckel, 1887 (original description)
Arachnocorallium Haeckel, 1887 (original description)
Arachnocoronium Haeckel, 1887 (original description)
Arachnocorythium Haeckel, 1887 (original description)
Archicircus Haeckel, 1887 (original description)
Archiphaena Haeckel, 1887 (original description)
Archistephus Haeckel, 1887 (original description)
Artocyrtis Haeckel, 1887 (original description)
Artostrobium Haeckel, 1887 (original description)
Artostrobulus Haeckel, 1887 (original description)
Artostrobus Haeckel, 1887 (original description)
Astrophormis Haeckel, 1887 (original description)
Aulactinium Haeckel, 1887 (original description)
Aularia Haeckel, 1887 (original description)
Aulastrum Haeckel, 1887 (original description)
Aulatractus Haeckel, 1887 (original description)
Auloceraea Haeckel, 1887 (original description)
Auloceratium Haeckel, 1887 (original description)
Auloceros Haeckel, 1887 (original description)
Aulodendron Haeckel, 1887 (original description)
Aulodictyum Haeckel, 1887 (original description)
Aulographantha Haeckel, 1887 (original description)
Aulographella Haeckel, 1887 (original description)
Aulographidium Haeckel, 1887 (original description)
Aulographis Haeckel, 1887 (original description)
Aulographonium Haeckel, 1887 (original description)
Aulonia Haeckel, 1887 † (original description)
Aulophacus Haeckel, 1887 (original description)
Auloplegma Haeckel, 1887 (original description)
Auloscena Haeckel, 1887 (original description)
Auloscenidium Haeckel, 1887 (original description)
Auloscenium Haeckel, 1887 (original description)
Aulospathessa Haeckel, 1887 (original description)
Aulospathilla Haeckel, 1887 (original description)
Aulospathis Haeckel, 1887 (original description)
Aulosphaerantha Haeckel, 1887 (original description)
Aulosphaerella Haeckel, 1887 (original description)
Aulosphaerissa Haeckel, 1887 (original description)
Aulosphaeromma Haeckel, 1887 (original description)
Botryopera Haeckel, 1887 (original description)
Botryostrobus Haeckel, 1887 (original description)
Calocycletta Haeckel, 1887 † (original description)
Calocyclissa Haeckel, 1887 (original description)
Calocycloma Haeckel, 1887 † (original description)
Calocyclura Haeckel, 1887 (original description)
Calpocapsa Haeckel, 1887 (original description)
Calpophaena Haeckel, 1887 accepted as Cladophatna Haeckel, 1881 (original description)
Cannobelos Haeckel, 1887 (original description)
Cannopilus Haeckel, 1887 † (original description)
Cannorrhaphis Haeckel, 1887 (original description)
Cantharospyris Haeckel, 1887 (original description)
Carpocanarium Haeckel, 1887 (original description)
Carpocanidium Haeckel, 1887 (original description)
Carpocanistrum Haeckel, 1887 (original description)
Carpocanobium Haeckel, 1887 (original description)
Castanarium Haeckel, 1887 (original description)
Castanella Haeckel, 1887 (original description)
Castanidium Haeckel, 1887 (original description)
Castanissa Haeckel, 1887 (original description)
Castanopsis Haeckel, 1887 (original description)
Castanura Haeckel, 1887 (original description)
Catinulus Haeckel, 1887 (original description)
Cenocapsa Haeckel, 1887 (original description)
Cenodiscus Haeckel, 1887 (original description)
Cenolarcus Haeckel, 1887 (original description)
Centrocubus Haeckel, 1887 (original description)
Challengeranium Haeckel, 1887 (original description)
Challengerantha Haeckel, 1887 (original description)
Challengerebium Haeckel, 1887 (original description)
Challengeretta Haeckel, 1887 (original description)
Challengeridium Haeckel, 1887 (original description)
Challengerilla Haeckel, 1887 (original description)
Challengeromma Haeckel, 1887 (original description)
Challengeron Haeckel, 1887 accepted as Challengeron Murray, 1879 (original description)
Challengerosium Haeckel, 1887 (original description)
Circogonia Haeckel, 1887 (original description)
Circoporus Haeckel, 1887 accepted as Circoporus Haeckel, 1879 (original description)
Circorrhegma Haeckel, 1887 (original description)
Circospathis Haeckel, 1887 (original description)
Circostephanus Haeckel, 1887 (original description)
Circotympanum Haeckel, 1887 (original description)