Authorship

SN2000 author citation	:			(C.R. Woese et al., 1990) G.M. Garrity & J.G. Holt, in D.R. Boone et al., eds., 2001/2002, nom. descript., stat. praeinit.
Original name	:			Woese, C.R., Kandler, O. & Wheelis, M.L. 1990. Proc. Natl. Acad. Sci. USA 87: 4579.
Unavailable subsequent rank (orig. spell.)	:			Garrity, G.M. & Holt, J.G. 2001a. In D.R. Boone & R.W. Castenholz (eds.), in G.M. Garrity (ed.), Bergey's Man. Syst. Bacteriol. (ed. 2) 1: 124 ("phy. nov. Garrity and Holt."), 155 ("phy. nov."). [working description].
Subsequent rank (orig. spell.)	:			Garrity, G.M. & Holt, J.G. 2001c. In D.R. Boone & R.W. Castenholz (eds.), Vol. 1: The Archaea and the Deeply Branching and Phototrophic Bacteria. In G.M. Garrity (ed.), Bergey's Manual of Systematic Bacteriology, 2nd ed., Springer-Verlag, New York.: 211 ("phy. nov.").
Validating publication	:			[Anonymous] 2002. Int. J. Syst. Evol. Microbiol. 52 (3): tbl. (p. 685: "phyl. nov.‡", "Garrity and Holt").

Etymology

Greek eury, broad.	Ref: L. Margulis & K.V. Schwartz, 1998: 58.
Greek eury, wide.	Ref: L. Margulis & K.V. Schwartz, 1998: 58.
Greek archae, old.	Ref: L. Margulis & K.V. Schwartz, 1998: 58.
Greek -otes, quality.	Ref: L. Margulis & K.V. Schwartz, 1998: 58.

Attributes

Pre-starting-point rank (stat. inval.[: praeinit.]) [ICNP, 2022: p. 1, Rules 5b, 8 (phylum, <2021)]				Ref: [Anonymous], 2002. Int. J. Syst. Evol. Microbiol. 52 (3): tbl. (p. 685: "‡").
Descriptive name ([nom. illeg.]: nom. descript.) [ICNP, 2025: Rule 8; Judicial Opinion 129: 3-4, 7 (>order)]				Ref: D.R. Arahal et al. 2024. Judicial Opinion 129: 7.

Types

Type

:

Methanobacteriales (Order) Balch and Wolfe 1981

Ref: [Anonymous], 2002: tbl. (p. 685).

Variants

Former rank	:	Euryarchaeota (Kingdom) Woese et al. 1990
Former rank	:	Euryarchaeota (Subdivision) Cavalier-Smith 2002
Former rank	:	Euryarcheota (Subphylum) (C.R. Woese et al. 1990) Cavalier-Smith 1998

Synonyms

Accepted name	:	Methanobacteriati (Kingdom) (Garrity and Holt 2023) Oren and Göker 2024		Ref: M. Göker & A. Oren, 2024: 5, tbl. 1 (p. 2). [new]
Including	:	Eurytherma (Infraphylum) Cavalier-Smith 1998
Including	:	Halomebacteria (Infraphylum) Cavalier-Smith 1986
Including	:	Methaneocreatrices (Phylum) Margulis and Schwartz 1982 nom. ined.
Including	:	methanogens ([unranked])