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 "Methanomicrobia" Order Methanomicrobialesᵀ Balch and Wolfe 1981 Family Methanocorpusculaceae Zellner et al. 1989 [monotypic] Genus Methanocorpusculumᵀ Zellner et al. 1988 1 Methanocorpusculum aggregans (Ollivier et al. 1985) Xun et al. 1989 2 Methanocorpusculum bavaricum Zellner et al. 1989 3 Methanocorpusculum labreanum Zhao et al. 1989 4 Methanocorpusculum parvum Zellner et al. 1988 5 Methanocorpusculum sinense Zellner et al. 1989