Kingdom Protista (Haeckel, 1866) - protists Division Chrysophyta see Phylum Chrysophyta Pascher (1914) Class Coccolithophyceae Rothm. (1951) Genus †Cyclococcolithus Kamptner (1954) Cyclococcolithus leptoporus †Cyclococcolithus macintyrei †Cyclococcolithus robustus