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 Firmicutes corrig. Gibbons and Murray 1978 (Approved Lists 1980)
                 Class Negativicutes Marchandin et al. 2010 [monotypic]
                   Order Selenomonadales Marchandin et al. 2010
                     Family Selenomonadaceaeᵀ Campbell et al. 2015
                       Genus Pectinatus Lee et al. 1978 (Approved Lists 1980)
                         1 Pectinatus cerevisiiphilusᵀ Lee et al. 1978 (Approved Lists 1980)
                         2 Pectinatus frisingensis Schleifer et al. 1990
                         3 Pectinatus portalensis Gonzalez et al. 2005
                         4 Pectinatus haikarae Juvonen and Suihko 2006
                         5 Pectinatus brassicae Zhang et al. 2012