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?]
             Phylum "Epsilonproteobacteria" Garrity et al., 2006
               Class Epsilonproteobacteriaᵀ Garrity et al. 2006
                 Order Nautiliales Miroshnichenko et al. 2004 [monotypic]
                   Family Nautiliaceaeᵀ Miroshnichenko et al. 2004
                     Genus Nautiliaᵀ Miroshnichenko et al. 2002
                       1 Nautilia lithotrophicaᵀ Miroshnichenko et al. 2002
                       2 Nautilia abyssi Alain et al. 2009
                       3 Nautilia nitratireducens Pérez-Rodríguez et al. 2010
                       4 Nautilia profundicola Smith et al. 2008