Kingdom Protista (Haeckel, 1866) - protists Division Chrysophyta see Phylum Chrysophyta Pascher (1914) Class Coccolithophyceae Rothm. (1951) Genus †Crucirhabdus Prins ex Rood, Hay & Barnard (1973) †Crucirhabdus primulus Rood et al. (1973)