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 Bacillatiᵀ (Gibbons and Murray 1978) Oren and Göker 2024
               Phylum Cyanobacteriota Oren et al. 2022
                 Class Vampirovibrionophyceae corrig. Strunecký and Mareš 2023
                   Order "Candidatus Gastranaerophilales" Di Rienzi et al. 2020
                     Family "Candidatus Gastranaerophilaceae"ᵀ Gilroy et al. 2021 nom. pro-inval.
                       1 Genus "Candidatus Avigastranaerophilus" Gilroy et al. 2022
                       2 Genus "Candidatus Galligastranaerophilus" Gilroy et al. 2022
                       3 Genus "Candidatus Gastranaerophilus"ᵀ Soo et al. 2020
                       4 Genus "Candidatus Limenecus" Gilroy et al. 2022
                       5 Genus "Candidatus Scatenecus" Gilroy et al. 2022
                       6 Genus "Candidatus Scatousia" Gilroy et al. 2022
                       7 Genus "Candidatus Spyradomonas" Gilroy et al. 2022
                       8 Genus "Candidatus Stercorousia" Gilroy et al. 2022