[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 Oceanospirillales Garrity et al. 2005
           Family Oceanospirillaceae Garrity et al. 2005
             Genus Pseudospirillum Satomi et al. 2002
               Pseudospirillum japonicum (Watanabe 1959) Satomi et al. 2002