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] Domain Bacteria Woese et al. 1990 [paraphyletic?] Superphylum Fibrobacteres-Chlorobi-Bacteroidetes (FCB) Gupta 2004 Phylum Bacteroidetes Krieg et al. 2012 Class Flavobacteriia Bernardet 2012 [monotypic] Order Flavobacteriales Bernardet 2012 Family Flavobacteriaceaeᵀ Reichenbach et al. 1992 Genus Psychroflexus Bowman et al. 1999 1 Psychroflexus gondwanensis corrig. (Dobson et al. 1993) Bowman et al. 1999 2 Psychroflexus sediminis Chen et al. 2009 3 Psychroflexus torquis Bowman et al. 1999 4 Psychroflexus tropicus Donachie et al. 2004