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 Bacteroidiaᵀ Krieg 2012 [monotypic]
                   Order Bacteroidalesᵀ Krieg 2012
                     Family Marinifilaceae Iino et al. 2014
                       1 Genus Ancylomarina Wu et al. 2016
                       2 Genus Labilibaculum Vandieken et al. 2019
                       3 Genus Marinifilumᵀ Na et al. 2009
                       4 Genus Paralabilibaculum Zhuang et al. 2025