Captivus Baker et al. 2003 Captivus Baker et al. 2003 Captivus acidiprotistae Baker et al. 2003 Universal Root Woese et al. 1990 Bacteria (None 2015) Woese et al. 1990 Proteobacteria (sic) Garrity et al. 2021 Pseudomonadota corrig. Garrity et al. 2021 Alphaproteobacteriota (sic) Garrity et al. 2021 Alphaproteobacteria Garrity et al. 2006 Rickettsiales Gieszczykiewicz 1939 (Approved Lists 1980) emend. Dumler et al. 2001 Incertae sedis 240 Baker et al. 2003 Captivus Baker et al. 2003 Incertae sedis 240 Baker et al. 2003 Captivus acidiprotistae Baker et al. 2003 Baker B.J. Hugenholtz P. Dawson S.C. Banfield J.F. Extremely acidophilic protists from acid mine drainage host Rickettsiales-lineage endosymbionts that have intervening sequences in their 16S rRNA genes. 2003 69 9 5512 8 Applied and Environmental Microbiology Appl Environ Microbiol 0099-2240 1098-5336 10.1128/AEM.69.9.5512-5518.2003 12957940 Baker B.J. Hugenholtz P. Dawson S.C. Banfield J.F. Extremely acidophilic protists from acid mine drainage host Rickettsiales-lineage endosymbionts that have intervening sequences in their 16S rRNA genes. 2003 69 9 5512 8 Applied and Environmental Microbiology Appl Environ Microbiol 0099-2240 1098-5336 10.1128/AEM.69.9.5512-5518.2003 12957940