living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Prokaryotae see Superkingdom Prokarya
     Kingdom Monera Haeckel 1866 see Domain Bacteria Woese et al. 1990
       Division Bacteria (Haeckel 1894) see Domain Bacteria Woese et al. 1990
         "Gram-positive cocci"
           1 Family Micrococcaceae Pribram 1929 (Approved Lists 1980)
           2 Family Streptococcaceae Deibel and Seeley 1974 (Approved Lists 1980)
           3 Family Peptococcaceae Rogosa 1971 (Approved Lists 1980)