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] Superphylum TACK Guy and Ettema 2011 Phylum Crenarchaeota Garrity and Holt 2001 [Class "Thermoprotei" Reysenbach 2001] see Class Thermoprotei Reysenbach 2002 [Order "Desulfurococcales" Huber and Stetter 2001 nom. inval.] see Order Desulfurococcales Huber and Stetter 2002