Thiocapsaceae Bavendamm 1924 (Approved Lists 1980) Thiocapsaceae Bavendamm 1924 (Approved Lists 1980) Thiocapsa Winogradsky 1888 (Approved Lists 1980) emend. Guyoneaud et al. 1998 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 Gammaproteobacteria Garrity et al. 2005 emend. Williams and Kelly 2013 Chromatiales Imhoff 2005 Thiocapsaceae Bavendamm 1924 (Approved Lists 1980) Chromatiales Imhoff 2005 Chromatiaceae Bavendamm 1924 (Approved Lists 1980) emend. Sisinthy et al. 2017 Halothiobacillaceae Kelly and Wood 2005 emend. Boden 2017 Ectothiorhodospiraceae Imhoff 1984 emend. Imhoff et al. 2022 Granulosicoccaceae Lee et al. 2008 Thioalkalispiraceae Mori et al. 2011 Incertae sedis 161 None 2015 Wenzhouxiangellaceae Wang et al. 2015 Woeseiaceae Du et al. 2015 Aquichromatiaceae Yang et al. 2017 Thioprofundaceae Kojima et al. 2017 Thioalkalibacteraceae Boden 2017 Competibacteraceae McIlroy et al. 2014 Thiocapsa Winogradsky 1888 (Approved Lists 1980) emend. Guyoneaud et al. 1998 Thiocystis Winogradsky 1888 (Approved Lists 1980) emend. Imhoff et al. 1998 Pfennig N. Trüper H.G. Conservation of the Family Name Chromatiaceae Bavendamm 1924 with the Type Genus Chromatium Perty 1852 Request for an Opinion 1971 21 1 15 16 International Journal of Systematic Bacteriology Int J Syst Bacteriol 0020-7713 10.1099/00207713-21-1-15 Bavendamm W. Bavendamm W. Familie: Thiocapsaceae 1924 2 1 118 120 Die farblosen und roten Schwefelbakterien des Süß-und Salzwassers Verlag von Gustav Fischer Berlin-Dahlem The original circumscription of Thiocapsaceae Bavendamm 1924 also included the genus Thiosarcina, which was not included on the Approved Lists. Chromatiaceae Bavendamm 1924 (Approved Lists 1980) emend. Sisinthy et al. 2017 Pfennig N. Trüper H.G. Conservation of the Family Name Chromatiaceae Bavendamm 1924 with the Type Genus Chromatium Perty 1852 Request for an Opinion 1971 21 1 15 16 International Journal of Systematic Bacteriology Int J Syst Bacteriol 0020-7713 10.1099/00207713-21-1-15 Bavendamm W. Bavendamm W. Familie: Thiocapsaceae 1924 2 1 118 120 Die farblosen und roten Schwefelbakterien des Süß-und Salzwassers Verlag von Gustav Fischer Berlin-Dahlem Skerman V.B.D. McGowan V. Sneath P.H.A. Approved Lists of Bacterial Names 1980 30 1 225 420 International Journal of Systematic Bacteriology Int J Syst Bacteriol 0020-7713 10.1099/00207713-30-1-225 TODO (garrity): RFO It looks like a request for opinion occurred, but there was never an opinion rendered. My interpretation is in the public note. This taxon was the result of elevating the subfamily Thiocapsaceae (sic) Migula 1894 to the rank of family in the Eubacteria (NVP) - Thiobacteria (NVP) - Rhodo-Thiobacteria (NVP). Between 1924 and 1930 (Bergey's Third Edition), Thiocapsaceae (Bavendamm 1924) fell out of use in preference to the tribe Thiocapseae (Buchanan 1918) in the Rhodobacteriaceae. Between 1934 (Bergey's Fourth Edition) and 1948 (Bergey's Sixth Edition) the tribe and/or family had been unified into the taxon Thiorhodaceae (Molisch 1907), which was illegitimate because the name of the taxon was not based on its nomenclatural type, Thiocapsa. Although Thiocapsaceae has priority over Chromatiaceae, the name Chromatiaceae was proposed for conservation, effectively unifying Thiocapsaceae into Chromatiaceae.