Procaryotic Genera Domain "Archaea" Woese et al. 1990 Phylum Euryarchaeota Garrity and Holt 2001 Class Thermoplasmata Reysenbach 2001 [monotypic] see Class Thermoplasmata Reysenbach 2002 Order Thermoplasmatalesᵀ Reysenbach 2001 see Order Thermoplasmatales Reysenbach 2002 Family Thermoplasmataceae Reysenbach 2001 [monotypic] see Family Thermoplasmataceae Reysenbach 2002 Genus Thermoplasmaᵀ Darland et al. 1970 (Approved Lists 1980)