Natura - nature actualia - actual entities Mundus Plinius - physical world naturalia - natural bodies Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020] Domain Bacteria Woese et al. 1990 [paraphyletic?] Superphylum Terrabacteria Battistuzzi et al. 2004 Phylum Firmicutes corrig. Gibbons and Murray 1978 (Approved Lists 1980) Class Clostridia Rainey 2010 Order Clostridialesᵀ Prévot 1953 (Approved Lists 1980) Family Syntrophomonadaceae Zhao et al. 1993 [Genus Syntrophospora Zhao et al. 1990] see Genus Syntrophomonas McInerney et al. 1982 [Syntrophospora bryantiiᵀ (Stieb and Schink 1985) Zhao et al. 1990] see Syntrophomonas bryantii (Stieb and Schink 1985) Wu et al. 2006