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" Family Peptococcaceae Rogosa 1971 (Approved Lists 1980) Genus Ruminococcus Sijpesteijn 1948 (Approved Lists 1980)