[1] However, the Genome Taxonomy Database (2018) based on relative evolutionary divergence found that CPR represents a single phylum,[2] with earlier figures inflated by the rapid evolution of ribosomal proteins.

[5][4] The other bacteria Wirthbacteria Dojkabacteria Katanobacteria Microgenomates Berkelbacteria Saccharibacteria Peregrinibacteria Absconditabacteria Gracilibacteria Parcubacteria However, several recent studies have suggested that the CPR belongs to Terrabacteria and is more closely related to Chloroflexota.

Dormibacteraeota Chloroflexota Because many CPR members are uncultivable, they cannot be formally put into the bacterial taxonomy, but a number of provisional, or Candidatus, names have been generally agreed on.

[1] The Phyla under CPR include: "Wirthbacteria" (CG2-30-54-11) "Dojkabacteria" "Katanobacteria" (WWE3) "Microgenomatia" "Berkelbacteria" (UBA1384) "Kazanbacteria" (Kazan) "Howlettbacteria" (CPR2) [failed verification] "Saccharimonadia" "Absconditabacteria" (JAEDAM01) "Gracilibacteria" "Doudnabacteria" "Andersenbacteria" "Torokbacteria" (GCA-2792135)

"Paceibacteria" "Woykebacterales" (CG2-30-54-11) "Curtissbacterales" "Daviesbacterales" "Roizmanbacterales" (UBA1406) "Gottesmanbacterales" (UBA10105) "Levybacterales" "Amesbacteraceae" "Blackburnbacteraceae" (UBA10165) "Woesebacteraceae" (UBA8517) "Shapirobacterales" (UBA12405) "Beckwithbacteraceae" (CG1-02-47-37) "Collierbacteraceae" (UBA12108) "Chazhemtonibacteraceae" "Chisholmbacteraceae" "Cerribacteraceae" (UBA12028) "Pacebacteraceae" (PJMF01) "Ca.

Altimarinus" {BD1-5: UBA6164} "Absconditicoccaceae" {"Absconditabacterales"} "Abawacabacteriales" (RBG-16-42-10) "Peregrinibacterales" (UBA1369) "Fallacibacteriales" (UBA4473) "Peribacterales" "Kerfeldbacterales" (SBBC01) "Jacksonbacterales" (UBA9629) "Komeilibacterales" (UBA1558) "Kuenenbacterales" (UBA2196) "Veblenbacterales" "Magasanikbacterales" "Uhrbacterales" (SG8-24) "Buchananbacterales" "Falkowbacterales" (BM507) "Moisslbacterales" (UBA2591) "Moranbacterales" "Brennerbacteraceae" "Jorgensenbacteraceae" (GWB1-50-10) "Wolfebacteraceae" (UBA9933) "Colwellbacteraceae" (UBA9933) "Harrisonbacteraceae" (WO2-44-18) "Liptonbacteraceae" (2-01-FULL-56-20) "Spechtbacterales" "Terrybacterales" "Parcunitrobacterales" (GWA2-38-13b) "Portnoybacterales" "Wildermuthbacteraceae" (UBA10102) "Gribaldobacteraceae" (CG1-02-41-26) "Paceibacteraceae" ("Parcubacteria") "Nealsonbacteraceae" (PWPS01) "Staskawiczbacteraceae" "Azambacterales" (UBA10092) "Yanofskybacterales" (2-02-FULL-40-12) "Sungbacterales" "Ryanbacterales" "Giovannonibacterales" (UBA11713) "Niyogibacterales" (HO2-45-28) "Tagabacterales" "Vogelbacteraceae" (XYD1-FULL-46-19) "Yonathbacteraceae" (UBA1539) "Nomurabacteraceae" (UBA9973) "Adlerbacteraceae" (SBAW01) "Kaiserbacteraceae" (UBA2163) "Campbellbacteraceae" (UBA12079) "Taylorbacteraceae" (PALSA-1337) "Zambryskibacteraceae" The current phylogeny is based on ribosomal proteins (Hug et al., 2016).