Phylum Spirochaetota

Name: Spirochaetota Garrity and Holt 2021

Category: Phylum

Proposed as: phyl. nov.

Etymology: Spi.ro.chae.to’ta. N.L. fem. n. Spirochaeta, type genus of the phylum; L. neut. pl. n. suff. -ota, ending to denote a phylum; N.L. neut. pl. n. Spirochaetota, the Spirochaeta phylum

Pronunciation (Latin), gender: spi-ro-k^ha͡e-TO-ta, neuter

Type genus: Spirochaeta Ehrenberg 1835 (Approved Lists 1980)

Valid publication: Oren A, Garrity GM. Valid publication of the names of forty-two phyla of prokaryotes. Int J Syst Evol Microbiol 2021; 71:5056. 🇮🇱

IJSEM list: Oren A, Garrity GM. Notification list. Notification that new names and new combinations have appeared in volume 71, part 10 of the IJSEM. Int J Syst Evol Microbiol 2022; 72:5165.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Synonyms:

Name	Kind
"Spirochaetae" (Ehrenberg 1855) Cavalier-Smith 1998	heterotypic synonym, not validly published
"Spirochaetota" Whitman et al. 2018	homotypic synonym, not validly published
"Spirochaetes" Garrity and Holt 2001	homotypic synonym, not validly published
"Spirochaetaeota" Oren et al. 2015	homotypic synonym, not validly published

Notes:
- 🧕 Göker and Oren (2024) assigned this phylum to the domain Bacteria Woese et al. 2024. Publication: Goker M, Oren A. Valid publication of names of two domains and seven kingdoms of prokaryotes. Int J Syst Evol Microbiol 2024; 74:6242. 🇩🇪
- 🧕 Oren and Garrity (2021) assigned this phylum to the domain "Bacteria" Woese et al. 1990. Publication: Oren A, Garrity GM. Valid publication of the names of forty-two phyla of prokaryotes. Int J Syst Evol Microbiol 2021; 71:5056. 🇮🇱
- 🧒 Oren and Garrity (2021) assigned the genus Spirochaeta Ehrenberg 1835 (Approved Lists 1980) to this phylum. Publication: Oren A, Garrity GM. Valid publication of the names of forty-two phyla of prokaryotes. Int J Syst Evol Microbiol 2021; 71:5056. 🇮🇱
- 🙄 This taxon name is occasionally misprinted (or affected by an OCR error) in some sources as: "Spirochaeota"; "Spirochaeotota"; "Spirochaota"; "Spirochcota".
- ✏ The authority of the taxon name (Garrity and Holt) deliberately differs from the authors of the publication (Oren and Garrity).
- 🎰 The BRCs most frequently used for deposits in this group are: DSM: 184; ATCC: 134; CIP: 85; KIT: 53; JCM: 50; NCTC: 14; KCTC: 12; B: 10; CCUG: 8; VKM: 8.

Subdivision:

Number of child taxa with a validly published and correct name: 1
Number of child taxa with a validly published name, including synonyms: 5
Total number of child taxa: 8

Child taxa:

Name	Nomenclatural status	Taxonomic status
Brachyspiria Chuvochina et al. 2024	validly published under the ICNP	synonym
Brevinematia Chuvochina et al. 2024	validly published under the ICNP	synonym
Leptospiria Chuvochina et al. 2024	validly published under the ICNP	synonym
"Leptospiria" Cavalier-Smith 2020	not validly published	synonym
Spirochaetes Cavalier-Smith 2002	validly published under the ICNP, rejected name	synonym
"Spirochaetia" Cavalier-Smith 2020	not validly published	synonym
Spirochaetia Paster 2020	validly published under the ICNP	correct name
[Spirochaetota, not assigned to class]	artificial parent node of taxa incertae sedis

Parent taxon: Pseudomonadati (Gibbons and Murray 1978) Oren and Göker 2024

Assigned by: Goker M, Oren A. Valid publication of names of two domains and seven kingdoms of prokaryotes. Int J Syst Evol Microbiol 2024; 74:6242. 🇩🇪

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Record number: 25883

This LPSN page was printed on 2026-08-19 21:22:22

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Phylum Spirochaetota