[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020] Eukaryota Chatton, 1925 - eukaryotes see Domain Eukaryota Chatton, 1925 Class Coscinodiscophyceae Round & R.M. Crawford (1990) - radial centrics Subclass Coscinodiscophycidae Round & R.M. Crawford (1990) Order Coscinodiscales Round & R.M. Crawford (1990) Family Coscinodiscaceae Kütz. (1844) Genus Coscinodiscus Ehrenb. (1839) Coscinodiscus perforatus Ehrenberg Coscinodiscus perforatus var. pavillardi (Forti) Hustedt see Coscinodiscus perforatus var. pavillardii (Forti, 1922) Hustedt (1928)