prokaryotes - bacteria see Domain Bacteria Woese et al. 1990 stat. inval.
   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 Betaproteobacteria Garrity et al. 2006
         Order Neisseriales Tønjum 2006
           Family Neisseriaceae Prévot 1933 (Approved Lists 1980)
             01 Genus Alysiella Langeron 1923 (Approved Lists 1980)
             02 Genus Amantichitinum Moß et al. 2013
             03 Genus Bergeriella Xie and Yokota 2005
             04 Genus Conchiformibius corrig. Xie and Yokota 2005
             05 Genus Crenobacter Dong et al. 2015
             06 Genus Eikenella Jackson and Goodman 1972 (Approved Lists 1980)
             07 Genus Kingella Henriksen and Bøvre 1976 (Approved Lists 1980)
             08 Genus Morococcus Long et al. 1981
             09 Genus Neisseria Trevisan 1885 (Approved Lists 1980) nom. cons.
             10 Genus Prolinoborus Pot et al. 1992
             11 Genus Rivicola Sheu et al. 2014 nom. illeg. see Genus Rivihabitans Deshmukh and Oren 2023
             12 Genus Simonsiella Schmid 1922 (Approved Lists 1980)
             13 Genus Snodgrassella Kwong and Moran 2013
             14 Genus Stenoxybacter Wertz and Breznak 2008
             15 Genus Uruburuella Vela et al. 2005
             16 Genus Vitreoscilla Pringsheim 1949 (Approved Lists 1980)