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 "Proteobacteria" Craig et al. 2010 Phylum "Gammaproteobacteria" Garrity et al., 2005 [monotypic] Class Gammaproteobacteriaᵀ Garrity et al. 2005 Order "Enterobacteriales" Garrity and Holt 2001 nom. nud. [monotypic] Family Enterobacteriaceaeᵀ Rahn 1937 (Approved Lists 1980) Genus Klebsiella Trevisan 1885 (Approved Lists 1980) Klebsiella pneumoniae (Schroeter 1886) Trevisan 1887 (Approved Lists 1980) 1 Klebsiella pneumoniae subsp. ozaenae (Abel 1893) Ørskov 1984 2 Klebsiella pneumoniae subsp. pneumoniaeᵀ (Schroeter 1886) Ørskov 1984 3 Klebsiella pneumoniae subsp. rhinoscleromatis (Trevisan 1887) Ørskov 1984