Arthropoda
Agnostotes Öpik, 1963
Alaskadiscus
Chelediscus Rushton, 1966
Dawsonia Hartt, 1868
Egyngolia
Ekwipagetia Fritz, 1973
Eodiscus Matthew, 1896
Hebediscina Rasetti, 1972
Jinghediscus
Korobovia Jell, 1990
Macannaia Jell, 1975
Microdiscus Emmons, 1855
Neocobboldia Rasetti, 1952
Opsidiscus Westergard, 1949
Sinodiscus Lu Chang, Chien, Chu, Lin, Chou, Chien, Zhang & Wu, 1974
Trinodus M'Coy, 1846
