Gastropoda Cuvier, 1797
Cyrtolitina Ulrich & Scofield, 1897
Eobucania Kobayashi, 1955
Groomodiscus Rohr & Yochelson, 1990
Kosorodiscus
Neimongolidiscus Pan & Cook, 2003
Nylanderina Boucot, Cumming & Jaeger, 1967
Oxydiscus Koken, 1889
Oxynodiscus Kobayashi, 1934
Peelerophon Yochelson, 1982
Pharetrolites Wenz, 1943
Strepsodiscus Knight, 1948
Tropidocyclus Koninck, 1882
Vorticina Gordon & Yochelson, 1987
Westraliadiscus Cook, 1999
Zonidiscus Spitz, 1907
