[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 Betaproteobacteria Garrity et al. 2006
         Order Neisseriales Tønjum 2006
           Family Neisseriaceae Prévot 1933 (Approved Lists 1980)
             Genus Neisseria Trevisan 1885 (Approved Lists 1980)
               01 Neisseria gonorrhoeae (Zopf 1885) Trevisan 1885 (Approved Lists 1980)
               02 Neisseria animalis Berger 1960 (Approved Lists 1980)
               03 Neisseria animaloris Vandamme et al. 2006
               04 Neisseria bacilliformis Han et al. 2006
               05 Neisseria canis Berger 1962 (Approved Lists 1980)
               06 Neisseria cinerea (von Lingelsheim 1906) Murray 1939 (Approved Lists 1980)
               07 Neisseria dentiae Sneath and Barrett 1997
               08 [Neisseria elongata] Bøvre and Holten 1970 (Approved Lists 1980)
               09 Neisseria flava Bergey et al. 1923 (Approved Lists 1980)
               10 Neisseria flavescens Branham 1930 (Approved Lists 1980)
               11 Neisseria iguanae Barrett et al. 1994
               12 Neisseria lactamica Hollis et al. 1969 (Approved Lists 1980)
               13 Neisseria macacae Vedros et al. 1983
               14 Neisseria meningitidis (Albrecht and Ghon 1901) Murray 1929 (Approved Lists 1980)
               15 Neisseria mucosa Véron et al. 1959 (Approved Lists 1980)
               16 Neisseria perflava Bergey et al. 1923 (Approved Lists 1980)
               17 Neisseria polysaccharea Riou and Guibourdenche 1987
               18 Neisseria sicca (von Lingelsheim 1908) Bergey et al. 1923 (Approved Lists 1980)
               19 Neisseria subflava (Flügge 1886) Trevisan 1889 (Approved Lists 1980)
               20 Neisseria weaveri Holmes et al. 1993
               21 Neisseria zoodegmatis Vandamme et al. 2006