Spartobacteria Sangwan et al. 2004 Spartobacteria Sangwan et al. 2004 Chthoniobacterales Sangwan et al. 2004 Universal Root Woese et al. 1990 Bacteria (None 2015) Woese et al. 1990 Verrucomicrobia (sic) Hedlund 2021 Verrucomicrobiota corrig. Hedlund 2021 Spartobacteria Sangwan et al. 2004 Verrucomicrobia (sic) Hedlund 2021 Verrucomicrobiota corrig. Hedlund 2021 Opitutae Choo et al. 2007 Verrucomicrobiae Hedlund et al. 1998 emend. Yoon et al. 2008 Incertae sedis 166 None 2015 Incertae sedis 310 Hou et al. 2008 Incertae sedis 513 Sato et al. 2014 Terrimicrobia García-López et al. 2020 Chthoniobacterales Sangwan et al. 2004 Sangwan P. Chen X. Hugenholtz P. Janssen P.H. Chthoniobacter flavus gen. nov., sp. nov., the First Pure-Culture Representative of Subdivision Two, Spartobacteria classis nov., of the Phylum Verrucomicrobia 2004 70 5875 5881 Applied and Environmental Microbiology Appl Environ Microbiol 0099-2240 1098-5336 10.1128/AEM.70.10.5875-5881.2004 15466527 Sangwan P. Chen X. Hugenholtz P. Janssen P.H. Chthoniobacter flavus gen. nov., sp. nov., the First Pure-Culture Representative of Subdivision Two, Spartobacteria classis nov., of the Phylum Verrucomicrobia 2004 70 5875 5881 Applied and Environmental Microbiology Appl Environ Microbiol 0099-2240 1098-5336 10.1128/AEM.70.10.5875-5881.2004 15466527