one or more intervening taxonomic ranks:
* Genera not assigned to a family
** "Candidatus Anoxipelagibacter" Ruiz-Perez et al. 2021
** "Bilophococcus" Moench 1988
** "Charonomicrobium" Csotonyi et al. 2011
** "Candidatus Endolissoclinum" Kwan et al. 2012
**