Kingdom Protista (Haeckel, 1866) - protists
   Genus Chaos Linnaeus, 1767
   1 Order Radiolaria Müller, 1858 see Phylum Actinopoda Calkins, 1902
   2 Order Foraminifera d'Orbigny, 1826 see Class Foraminifera d'Orbigny, 1826
   3 "diatoms" see Class Bacillariophyceae Haeckel (1878)
   4 Division Chrysophyta see Phylum Chrysophyta Pascher (1914)