Heliobacterium Gest and Favinger 1985 emend. Kyndt et al. 2021 Heliobacterium chlorum Gest and Favinger 1985 Universal Root Woese et al. 1990 Bacteria (None 2015) Woese et al. 1990 Firmicutes (sic) Gibbons and Murray 2021 Bacillota corrig. Gibbons and Murray 2021 Firmacutes (sic) Gibbons and Murray 2021 Clostridia Rainey 2010 Eubacteriales Buchanan 1917 (Approved Lists 1980) emend. Tindall 2019 Heliobacteriaceae Asao and Madigan 2010 Heliobacterium Gest and Favinger 1985 emend. Kyndt et al. 2021 Heliobacteriaceae Asao and Madigan 2010 Heliobacillus Beer-Romero and Gest 1998 Heliomonas Asao et al. 2012 Heliophilum Ormerod et al. 1996 Heliorestis Bryantseva et al. 2000 emend. Bryantseva et al. 2000 Heliomicrobium Kyndt et al. 2021 Heliobacterium undosum Bryantseva et al. 2001 Heliobacterium sulfidophilum Bryantseva et al. 2000 Heliobacterium modesticaldum Kimble et al. 1996 Heliobacterium gestii Ormerod et al. 1996 Heliobacterium chlorum Gest and Favinger 1985 Heliobacterium mobile (Beer-Romero and Gest 1998) Kyndt et al. 2021 Gest H. Favinger J.L. Heliobacterium chlorum, a anoxygenic brownish-green photosynthetic bacterium containing a new form of bacteriochlorophyll. 1983 136 11 16 Archives of Microbiology Arch Microbiol 0302-8933 1432-072X 10.1007/BF00415602 Kimble L.K. Mandelco L. Woese C.R. Madigan M.T. Heliobacterium modesticaldum sp. nov., a thermophilic heliobacterium of hot springs and volcanic soils. 1995 163 259 267 Archives of Microbiology Arch Microbiol 0302-8933 1432-072X 10.1007/BF00393378 Ormerod J.G. Kimble L.K. Nesbakken T. Torgersen Y.A. Woese C.R. Madigan M.T. Heliophilum fasciatum gen. nov. sp. nov. and Heliobacterium gestii sp. nov.: endospore-forming heliobacteria from rice field soils. 1996 165 226 234 Archives of Microbiology Arch Microbiol 0302-8933 1432-072X 10.1007/s002030050320 8952943 Bryantseva I.A. Gorlenko V.M. Tourova T.P. Kuznetsov B.B. Lysenko A.M. Bykova S.A. Gal'chenko V.F. Mityushina L.L. Osipov G.A. Heliobacterium sulfidophilum sp. nov. and Heliobacterium undosum sp. nov.: sulfide-oxidizing heliobacteria from thermal sulfidic springs. 2000 69 396 406 Mikrobiologiya (Russian) 0026-3656 10920811 Kyndt J.A. Montano Salama D. Meyer T.E. Imhoff J.F. Phylogenetic relationship of phototrophic heliobacteria and systematic reconsideration of species and genus assignments based on genome sequences of eight species. 2021 71 4 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijsem.0.004729 33881982