Family ALSASUACARIDAE Bakel, Jagt, Fraaije et Artal, 2011
Genus Alsasuacaris Bakel, Jagt, Fraaije et Artal, 2011 (1 species)
Genus Maastrichtiocaris Fraaije, Schram et Vonk, 2003 (1 species)
Family AMERICLIDAE Dzik, 2008
Genus Americlus Dzik, 2008 (8 species)
Genus Yunnanocyclus Feldmann et al., 2017 (1 species)
Family CYCLIDAE Packard, 1885
Genus Ambocyclus new genus (3 species)
Genus Carabicyclus new genus (1 species)
Genus Chernyshevine new genus (1 species)
Genus Cyclus de Koninck, 1841 (1 species)
Genus Litocyclus new genus (5 species)
Genus Prolatcyclus Mychko, Feldmann, Schweitzer, & Alekseev, 2019 (2 species)
Genus Tazawacyclus new genus (1 species)
Genus Uralocyclus Mychko & Alekseev, 2018 (3 species)
Family HALICYNIDAE Gall et Grauvogel, 1967
Genus Carcinaspides Glaessner 1969 (1 species)
Genus Halicyne Meyer, 1847 (6 species)
Genus Juracyclus Schweigert, 2007 (1 species)
Genus Opolanka Dzik, 2008 (1 species)
Family HEMITROCHISCIDAE Trauth, 1918
Genus Apionicon Schram et al., 1997 (1 species)
Genus Cyclocarcinides Glaessner, 1969 (5 species)
Genus Hemitrochiscus Schauroth, 1854 (1 species)
Genus Oonocarcinus Gemmellaro, 1890 (4 species)
Genus Paraprosopon Gemmellaro, 1890 (1 species)
Genus Skuinocyclus Mychko et Alekseev, 2018 (1 species)
Family SCHRAMINIDAE Dzik, 2008
Genus Schramine Dzik, 2008 (5 species)
