Domain Bacteria Woese et al. 1990 Phylum Actinobacteria Garrity and Holt 2001 Class Actinobacteria Stackebrandt et al. 1997 Subclass Coriobacteridae Stackebrandt et al. 1997 see Class Coriobacteriia König 2013 Order Coriobacteriales Stackebrandt et al. 1997 Suborder "Coriobacterineae" Garrity & Holt, 2001 Family Coriobacteriaceae Stackebrandt et al. 1997 Genus Atopobium Collins and Wallbanks 1993 Genus Collinsella Kageyama et al. 1999 Genus Cryptobacterium Nakazawa et al. 1999 Genus Eggerthella Wade et al. 1999 Genus Slackia Wade et al. 1999 1 Genus Coriobacterium Haas and König 1988