organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Kingdom Monera Haeckel 1866 see Domain Bacteria Woese et al. 1990
     Phylum Spirochaetae (Ehrenberg 1855) Cavalier-Smith 1998 see Phylum Spirochaetes Garrity and Holt 2001
       "Cristispires" see Family Spirochaetaceae Swellengrebel 1907 (Approved Lists 1980)
         "Pillotinas" see Family Spirochaetaceae Swellengrebel 1907 (Approved Lists 1980)
           1 Genus Pillotina (ex Hollande and Gharagozlou 1967) Bermudes et al. 1988
           2 Genus Hollandina (ex To et al. 1978) Bermudes et al. 1988
           3 Genus Diplocalyx (ex Gharagozlou 1968) Bermudes et al. 1988
           4 Genus Clevelandina Bermudes et al. 1988