Acanthocystis Haeckel, 1896 (original description)
Acelis Plehn, 1896 accepted as Plehnia Bock, 1913 (original description)
Agelacystis Haeckel, 1896 † accepted as Agelacrinites Vanuxem, 1842 † (original description)
Alloioplana Plehn, 1896 (original description)
Anomocystis Haeckel, 1896, nom. nud. † accepted as Anomalocystites Hall, 1859 † (original description)
Astroblastus Haeckel, 1896 † accepted as Asteroblastus Eichwald, 1862 † (original description)
Atelocystis Haeckel, 1896 † accepted as Ateleocystites Billings, 1858 † (original description)
Chirocrinus Haeckel, 1896 † accepted as Cheirocrinus Eichwald, 1856 † (original description)
Diplopharyngeata Plehn, 1896 (original description)
Fungocystis Haeckel, 1896 † accepted as Fungocystites Barrande, 1887 † (original description)
Halianthella Kwietniewksi, 1896 (original description)
Latocestus Plehn, 1896 (original description)
Palaeocystis Haeckel, 1896 † accepted as Palaeocystites Billings, 1858 † (original description)
Palamphora Haeckel, 1896 (original description)
Plagiotata Plehn, 1896 (original description)
Protamphora Haeckel, 1896 (original description)
Semonia Plehn, 1896 (original description)
Stephanamphora Haeckel, 1896 (original description)
Stephanocystis Haeckel, 1896 (original description)
Sycocystis Haeckel, 1896 † (original description)
Thuriocystis Haeckel, 1896 (original description)