Entity:

Authorship

SN2000 author citation	:	(Haeckel, 1894) C.R. Woese et al., 1990, stat. praeinit., sine typo
Original name	:	Haeckel, 1894.
Subsequent rank (orig. spell.)	:	Woese, C.R., Kandler, O. & Wheelis, M.L. 1990. Proc. Natl. Acad. Sci. USA 87: 4579.
Description/Diagnosis in English	:	loc. cit.

Attributes

Effectively, but not validly, published name (nom. inval.) [ICNP, 2019: Rule 25, App. 7 (IJSEM)]				Ref: LPSN, 2020-present. LPSN: [8 Dec 2025].
Pre-starting-point rank (stat. inval.[: praeinit.]) [ICNP, 2023: p. 1, Rules 5B, 8 (domain/kingdom, <2024)]				Ref: S.J. Brands (comp.), 1989-present. Syst. Nat. 2000: 8 Dec 2025.
Type: not designated (: sine typo) [ICNP, 2025: Rule 16 (eff. publ.)]				Ref: LPSN, 2020-present. LPSN: [8 Dec 2025] ("A nomenclatural type has not been designated.").

Variants

Different rank	:	*Bacteria* (Empire) Haeckel 1894
Different rank	:	*Bacteria* (Superkingdom) (Haeckel 1894)
Different rank	:	*Bacteria* (Kingdom) Cavalier-Smith 1998 nom. inval.
Different rank	:	*Bacteria* (Kingdom) Cavalier-Smith 2002 stat. inval.
Different rank	:	*Bacteria* (Division) Murray 1974 nom. vernac.
Different rank	:	*Bacteria* (Class) Haeckel 1894 (Approved Lists 1980)
Different rank	:	*Bacteriobionta* (Kingdom)
Former unranked name	:	*Bacteria* ([unranked]) Cavalier-Smith 2002

Homonyms

Allowed homonym

Bacteria (Genus) Latreille, Le Peletier de Saint Fargeau, Serville & Guerin, 1825

Synonyms

Accepted name (subjective)	:	*Bacteria* (Domain) Woese et al. 2024	Ref: LPSN, 2020-present: [8 Dec 2025] ("heterotypic").
Synonymous name	:	*Eubacteria* ([unranked])
Synonymous name	:	*Eubacteria* (Kingdom) Woese and Fox 1977
Synonymous name	:	*Eubacteria* (Subkingdom) Cavalier-Smith 1981
Synonymous name (objective)	:	*Eubacteria* (Domain)
Synonymous name (objective)	:	*Neobacteria* (Suprakingdom)
Synonymous name (objective)	:	*Schizobionta* ([unranked])
Synonymous name (pro parte)	:	*prokaryotes* ([unranked])
Including	:	*anaerobic photosynthetic bacteria* (Phylum)
Including	:	*Aphragmabacteria* (Phylum) Margulis and Schwartz 1982 nom. ined.
Including	:	*Bacteriobiota* (Kingdom) Jeffrey 1971 nom. inval.
Including	:	*Cyanobiota* (Kingdom) Jeffrey 1971
Including	:	*Eobacteria* (Infrakingdom) Cavalier-Smith 2002 stat. inval.
Including	:	*Eobacteria* (Superphylum) Cavalier-Smith 1998
Including	:	*Eobacteria* (Phylum) Cavalier-Smith 2002 stat. inval.
Including	:	*Eurybacteria* (Phylum) Cavalier-Smith 1998
Including	:	*Glycobacteria* (Infrakingdom) Cavalier-Smith 1998 nom. inval.
Including	:	*Glycobacteria* (Infrakingdom) Cavalier-Smith 2002 stat. inval.
Including	:	*Hadobacteria* (Phylum) Cavalier-Smith 1992 nom. inval.
Including	:	*Lipobacteria* (Infrakingdom) T. Cavalier-Smith 1998
Including	:	*Negibacteria* (Subkingdom) Cavalier-Smith 2002 stat. inval.
Including	:	*Omnibacteria* (Phylum) Margulis and Schwartz 1982 nom. ined.
Including	:	*Pimelobacteria* (Infrakingdom) Cavalier-Smith 1992
Including	:	*Pimelobacteria* (Superphylum) (Cavalier-Smith 1992) Cavalier-Smith 1998
Including	:	*Pirellulae* (Phylum) Margulis and Schwartz 1998 nom. ined.
Including	:	*Posibacteria* (Subkingdom) Cavalier-Smith 1987
Including	:	*Posibacteria* (Infrakingdom) (Cavalier-Smith 1987) Cavalier-Smith 1998
Including	:	*Posibacteria* (Phylum) Cavalier-Smith 1987
Including	:	*Posibacteria* (Phylum) Cavalier-Smith 1987 ex Cavalier-Smith 2002
Including	:	*Saprospirae* (Phylum) Margulis and Schwartz 1998 nom. ined.
Including	:	*Teichobacteria* (Subphylum) Cavalier-Smith 1998
Including	:	*Togobacteria* (Phylum) Cavalier-Smith 1992
Including	:	*Togobacteria* (Subphylum) Cavalier-Smith 1998
In (pro parte)	:	*Monera* (Kingdom) Haeckel 1866
In (pro parte)	:	*Procaryotae* (Kingdom) Murray 1968 (Approved Lists 1980) stat. inval.
In (pro parte)	:	*Prokarya* (Superkingdom)
In (pro parte)	:	*Prokaryota* (Domain)
In (pro parte)	:	*Prokaryota* (Empire) (Dougherty 1957) Allsopp 1969
In (pro parte)	:	*Unibacteria* (Subkingdom) Cavalier-Smith 1998
In (pro parte)	:	*Unibacteria* (Subkingdom) Cavalier-Smith 2002