Order †Cyclida Schram, Vonk & Hof, 1997, nom. corr.
   Family †Cyclidae Packard, 1885
     Genus †Cyclus de Koninck, 1841
       1 †Cyclus tazawai Niko & Ibaraki, 2011
       2 †Cyclus torosus Woodward, 1870
       3 †Cyclus simulans Reed, 1908
       4 †Cyclus jonesianus Woodward, 1870
       5 †Cyclus limbatus Rogers, 1902