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 Pseudomonadales Orla-Jensen 1921 (Approved Lists 1980)
                     Family Moraxellaceae Rossau et al. 1991
                       Genus Moraxellaᵀ Lwoff 1939 (Approved Lists 1980)
                         [Subgenus "Moraxella subgen. Branhamella" (Catlin 1970) Bøvre 1979 nom. inval.] see Genus Moraxella Lwoff 1939 (Approved Lists 1980)
                           1 [Moraxella (subgen. Branhamella Catlin, 1970) catarrhalis (Frosch and Kolle 1896) Bøvre 1979 (Approved Lists 1980)] see Moraxella catarrhalis (Frosch and Kolle 1896) Henriksen and Bøvre 1968 (Approved Lists 1980)
                           2 [Moraxella (subgen. Branhamella Catlin, 1970) caviae (Pelczar 1953) Bøvre 1979 (Approved Lists 1980)] see Moraxella caviae (Pelczar 1953) Henriksen and Bøvre 1968 (Approved Lists 1980)
                           3 [Moraxella (subgen. Branhamella Catlin, 1970) ovis (Lindqvist 1960) Bøvre 1979 (Approved Lists 1980)] see Moraxella ovis (Lindqvist 1960) Henriksen and Bøvre 1968 (Approved Lists 1980)