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] Domain Bacteria Woese et al. 1990 [paraphyletic?] Superphylum Terrabacteria Battistuzzi et al. 2004 Phylum "Actinobacteria" Garrity and Holt 2001 Class Actinobacteriaᵀ Stackebrandt et al. 1997 Order Micrococcales Prévot 1940 (Approved Lists 1980) Family Micrococcaceaeᵀ Pribram 1929 (Approved Lists 1980) Genus Arthrobacter Conn and Dimmick 1947 (Approved Lists 1980) Arthrobacter roseus Reddy et al. 2002