[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Bacteria Woese et al. 1990 stat. inval. see Domain Bacteria Woese et al. 2024
     Phylum "Proteobacteria" Garrity et al. 2005 stat. inval. see Phylum Pseudomonadota Garrity et al. 2021
       Class Gammaproteobacteria Garrity et al. 2005
         Order Pasteurellales Garrity et al. 2005
           Family Pasteurellaceae Pohl 1981
             Genus Aggregatibacter Nørskov-Lauritsen and Kilian 2006
               1 Aggregatibacter actinomycetemcomitans (Klinger 1912) Nørskov-Lauritsen and Kilian 2006
               2 Aggregatibacter aphrophilus (Khairat 1940) Nørskov-Lauritsen and Kilian 2006
               3 Aggregatibacter segnis (Kilian 1977) Nørskov-Lauritsen and Kilian 2006