Natura - nature
actualia - actual entities
Mundus Plinius - physical world
naturalia - natural bodies
[crown] Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
Clade neomura Cavalier-Smith, 1987
Domain Eukaryota Chatton, 1925 - eukaryotes
Clade discaria Cavalier-Smith, 2021
Clade natates Cavalier-Smith, 2021
Clade photaria Cavalier-Smith, 2021
Clade eucorta Cavalier-Smith, 2021
Superkingdom Corticata Lankester, 1878 - corticates
Kingdom Chromista Caval.-Sm. (1981) - chromists
Subkingdom Hacrobia Okamoto, Chantangsi, Horák, Leander & Keeling, 2009
Phylum Haptista Cavalier-Smith, 2003
Subphylum Haptophytinaᵀ Caval.-Sm. (2015)
Class Coccolithophyceae Rothm. (1951)
Order Coccolithales Schwarz (1932)
Family Coccolithaceaeᵀ Poche (1913)
Genus Umbilicosphaera Lohmann (1902)
Umbilicosphaera sibogae (Weber van Bosse) Gaarder (1970)
Umbilicosphaera sibogae var. foliosa