Thermogymnomonas Itoh et al. 2007 Thermogymnomonas acidicola Itoh et al. 2007 Universal Root Woese et al. 1990 Archaea Woese et al. 1990 Thermoplasmatota Rinke et al. 2019 Thermoplasmata Reysenbach 2002 Thermoplasmatales Reysenbach 2002 Incertae sedis 14 Itoh et al. 2007 Thermogymnomonas Itoh et al. 2007 Incertae sedis 14 Itoh et al. 2007 Thermogymnomonas acidicola Itoh et al. 2007 Itoh T. Yoshikawa N. Takashina T. Thermogymnomonas acidicola gen. nov., sp. nov., a novel thermoacidophilic, cell wall-less archaeon in the order Thermoplasmatales, isolated from a solfataric soil in Hakone, Japan. 2007 57 11 2557 2561 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.65203-0 17978217 The authors (Itoh et al. 2007, rid.3913) place the order Thermogymnomonas in the order Thermoplasmatales. A family is not designated.