Natura - nature actualia - actual entities Mundus Plinius - physical world naturalia - natural bodies [crown] Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020] Clade neomura Cavalier-Smith, 1987 Domain Archaea Woese et al. 1990 [paraphyletic] Phylum Euryarchaeota Garrity and Holt 2001 [Class "Thermoplasmata" Reysenbach 2001] see Class Thermoplasmata Reysenbach 2002 [Order "Thermoplasmatales"ᵀ Reysenbach 2001] see Order Thermoplasmatales Reysenbach 2002 [Family "Ferroplasmataceae"] see Family Ferroplasmaceae Golyshina et al. 2000