plantenrijk Haeckel (1866) - plants
   [Division] Protophyta Sachs 1874 - primitive plants
     Class Schizomycetes Nägeli 1857 (Approved Lists 1980) - bacteria and related forms
       Order Eubacteriales Buchanan 1917 (Approved Lists 1980) see Order Clostridiales Prévot 1953 (Approved Lists 1980)
         Family Parvobacteriaceae
           1 Genus Actinobacillus Brumpt 1910 (Approved Lists 1980)
           2 Genus Brucella Meyer and Shaw 1920 (Approved Lists 1980)
           3 Genus Hemophilus see Genus Haemophilus Winslow et al. 1917 (Approved Lists 1980)
           4 Genus Noguchia
           5 Genus Pasteurella Trevisan 1887 (Approved Lists 1980)