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. 2024
             Kingdom Pseudomonadati (Gibbons and Murray 1978) Oren and Göker 2024
               Phylum Bacteroidota Krieg et al. 2021
                 Class Cytophagia Nakagawa 2012 [monotypic]
                   Order Cytophagalesᵀ Leadbetter 1974 (Approved Lists 1980)
                     Family Cyclobacteriaceae Nedashkovskaya and Ludwig 2012
                       Genus Cyclobacteriumᵀ Raj and Maloy 1990
                         1 Cyclobacterium amurskyense Nedashkovskaya et al. 2005
                         2 Cyclobacterium caenipelagi Jung et al. 2013
                         3 Cyclobacterium halophilum Shahinpei et al. 2014
                         4 Cyclobacterium jeungdonense Joung et al. 2014
                         5 Cyclobacterium lianum Ying et al. 2006
                         6 Cyclobacterium marinumᵀ corrig. (Raj 1976) Raj and Maloy 1990
                         7 Cyclobacterium qasimii Shivaji et al. 2012
                         8 Cyclobacterium xiamenense Chen et al. 2014