Natura - nature actualia - actual entities Mundus Plinius - physical world naturalia - natural bodies Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020] Clade neomura Cavalier-Smith, 1987 Domain Archaea Woese et al. 1990 [paraphyletic] Phylum Euryarchaeota Garrity and Holt 2001 Class Halobacteria Grant et al. 2002 [monotypic] Order Halobacterialesᵀ Grant and Larsen 1989 [monotypic] Family Halobacteriaceaeᵀ Gibbons 1974 (Approved Lists 1980) [Genus Halorubrobacterium Kamekura and Dyall-Smith 1996 nom. illeg.] see Genus Halorubrum McGenity and Grant 1996 [Halorubrobacterium distributum (Zvyagintseva and Tarasov 1989) Kamekura and Dyall-Smith 1996] see Halorubrum distributum (Zvyagintseva and Tarasov 1989) Oren and Ventosa 1996