円盤綱
Apycnodiscidae Boczarowski, 2001 Apparatocycloides Boczarowski, 2001 Apycnodiscus Smith & Paul, 1982 Brutocycloides Boczarowski, 2001 Chimaerocycloides Boczarowski, 2001 Concavocycloides Boczarowski, 2001 Diastocycloides Smith & Paul, 1982 Linguacycloides Boczarowski, 2001 Minicycloides Haude & Thomas, 1994 Neocyclocystoides Boczarowski, 2001 Paradoxocycloides Boczarowski, 2001 Platycycloides Boczarowski, 2001 Polytryphocycloides Smith & Paul, 1982 Sievertsia Smith & Paul, 1982 Smithocycloides Boczarowski, 2001 Zygocycloides Smith & Paul, 1982
Cyclocystoididae S.A.Miller, 1882 Cyclocystoides Salter & Billings, 1858 Monocycloides V. Berg-Madsen, 1987 Nicholsodiscus Glass, Ausich & Copper, 2003 Scotiadiscus Reich & Smith, 2008