[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Bacteria Woese et al. 1990
     Phylum "Proteobacteria" Garrity et al. 2005 see Superphylum Proteobacteria Craig et al. 2010
       Class Gammaproteobacteria Garrity et al. 2005
         Order "Enterobacteriales" Garrity and Holt 2001 nom. nud.
           Family Enterobacteriaceae Rahn 1937 (Approved Lists 1980)
             Genus Serratia Bizio 1823 (Approved Lists 1980)
               [Serratia proteamaculans] (Paine and Stansfield 1919) Grimont et al. 1978 (Approved Lists 1980)
                 1 Serratia proteamaculans subsp. proteamaculansᵀ (Paine and Stansfield 1919) Grimont et al. 1983 see Serratia proteamaculans (Paine and Stansfield 1919) Grimont et al. 1978 (Approved Lists 1980)