Mamiellophyceae class accepted

Nephroselmidophyceae class accepted

Apiroschadon Loeblich & Tappan, 1976 genus accepted

Pechengia A.Y. Rozanov & M.M. Astafieva, 2008 genus accepted

Retialetes S.C.D. Sah & S.K. Dutta, 1966 genus accepted

Hemiruptia Ottone, 1996 genus accepted

Chloropicophyceae A. Lopes dos Santos & W. Eikrem in A. Lopes dos Santos et al., 2017 class accepted

Palmophyllophyceae Leliaert et al., 2016 class accepted

Pteroverricatus T.K. Al-Ameri, 1984 genus accepted

Ptilotoscolus A.R. Loeblich Jr. & E.R. Wicander, 1976 genus accepted

Quadratimorpha Xing & Liu, 1973 genus accepted

Saharifusa E.D. Pöthe de Baldis, 1997 genus accepted

Thrypticosphaera W.A.S. Sarjeant, 1987 genus accepted

Wendiella Timofeev, 1962 genus accepted

Sgrossoella P. de Castro, 1969 genus accepted

Dasyhapsis A.R. Loeblich Jr. & E.R. Wicander, 1976 genus accepted

Dasyphapsis A.R. Loeblich Jr. & E.R. Wicander, 1976 genus accepted

Dictyodiscus Playford & Wicander, 1988 genus accepted

Picocystophyceae W. Eikrem & A. Lopes dos Santos in A. Lopes dos Santos et al., 2017 class accepted

Pyramimonadophyceae Ø. Moestrup & N. Daugbjerg in Daugbjerg et al., 2019 class accepted

Antrosphaera Sarjeant, 1961 genus accepted