Group †Calcitarcha G.J.M. Versteegh, T. Servais, Streng, Munnecke & Vachard (2009), incertae sedis [polyphyletic] - calcispheres
   01 Genus †Asterosphaerella Villain (1975)
   02 Genus †Bachmayerella Rögl & H. Franz (1979)
   03 Genus †Barnesiella Trejo (1983)
   04 Genus †Bolboforma von Daniels & Spiegler (1974)
   05 Genus †Calcisphaera Williamson (1880)
   06 Genus †Chonesphaera Klumpp (1953)
   07 Genus †Cimicellus Odin (2008)
   08 Genus †Gildaella Trejo (1983)
   09 Genus †Globulella Odin (2008)
   10 Genus †Lucernellus Odin (2008)
   11 Genus †Mendipsia Conil & Longerstaey (1979) see Genus Mendipsia Conil & Longerstaey, 1979
   12 Genus †Moravosphaera Langer (1997)
   13 Genus †Nannoconoides Trejo (1983)
   14 Genus †Pachysphaerina Conil & Lys (1968)
   15 Genus †Pilella Odin (2008)
   16 Genus †Piperella Odin (2008)
   17 Genus †Polyderma Derville (1950)
   18 Genus †Pseudopithonella Trejo (1983)
   19 Genus †Quasipolyderma Conil & Lys (1964)
   20 Genus †Radiina Reitlinger (1957)
   21 Genus †Radiosphaera Reitlinger (1957)
   22 Genus †Schizosphaerella Deflandre & P.J.L. Dang. (1938)
   23 Genus †Sinothoracosphaera K. Hou, X. Tian, Yancheng Chen, Z. Xuan, Xiuqing Liu & Bo (1991)
   24 Genus †Stomiosporella Trejo (1983)
   25 Genus †Tubella Odin (2008)
   26 Genus †Vasculum Odin (2008)
   27 †Pithonelloid taxa
   28 †Gilianelloid taxa