Name: Aquificae Reysenbach 2002

Category: Class

Proposed as: class. nov.

Etymology: A.qui.fi’cae. N.L. fem. pl. n. Aquificales, type order of the class, dropping the ending to denote a class; N.L. fem. pl. n. Aquificae, the class of Aquificales (sic)

Gender: feminine

Type genus: Aquifex Huber and Stetter 1992

Effective publication: Reysenbach A-L. Class I. Aquificae class. nov. In: Boone DR, Castenholz RW, Garrity GM (eds), Bergey's Manual of Systematic Bacteriology, 2nd edn, vol. 1 (The Archaea and the Deeply Branching and Phototrophic Bacteria), Springer, New York, 2001, p. 359-367.

IJSEM list: Anonymous. Validation list no. 85. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2002; 52:685-690.

Nomenclatural status: inaccurate spelling

Taxonomic status: misspelling

Correct name: Aquificia corrig. Reysenbach 2002

• Synonyms:

  • Name	Kind
    Desulfurobacteriia Chuvochina et al. 2024	heterotypic synonym, validly published under the ICNP
    Aquificia corrig. Reysenbach 2002	corrected spelling of name, validly published under the ICNP
    "Aquificia" Cavalier-Smith 2020	homotypic synonym, not validly published
    Epsilobacteria Cavalier-Smith 2002	homotypic synonym, validly published under the ICNP, rejected name
    "Thermosulfidibacteria" Montecillo 2024	heterotypic synonym, not validly published
    Thermosulfidibacteria Chuvochina et al. 2024	heterotypic synonym, validly published under the ICNP

• Emendations:
  • Gupta and Lali 2013 Gupta RS, Lali R. Molecular signatures for the phylum Aquificae and its different clades: proposal for division of the phylum Aquificae into the emended order Aquificales, containing the families Aquificaceae and Hydrogenothermaceae, and a new order Desulfurobacteriales ord. nov., containing the family Desulfurobacteriaceae. Antonie Van Leeuwenhoek 2013; 104:349-368. Oren A, Garrity GM. List of changes in taxonomic opinion no. 19. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2014; 64:8-10.

• Notes:
  • 🥇 Nomenclatural type of the phylum "Aquificaeota" Oren et al. 2015. Publication: Oren A, da Costa MS, Garrity GM, Rainey FA, Rossello-Mora R, Schink B, Sutcliffe I, Trujillo ME, Whitman WB. Proposal to include the rank of phylum in the International Code of Nomenclature of Prokaryotes. Int J Syst Evol Microbiol 2015; 65:4284-4287.
  • 🥇 Nomenclatural type of the phylum "Aquificota" Whitman et al. 2018. Publication: Whitman WB, Oren A, Chuvochina M, da Costa MS, Garrity GM, Rainey FA, Rossello-Mora R, Schink B, Sutcliffe I, Trujillo ME, et al. Proposal of the suffix -ota to denote phyla. Addendum to 'Proposal to include the rank of phylum in the International Code of Nomenclature of Prokaryotes'. Int J Syst Evol Microbiol 2018; 68:967-969.
  • 🧕 Gupta and Lali (2013) assigned this class to the phylum "Aquificae" Reysenbach 2001. Publication: Gupta RS, Lali R. Molecular signatures for the phylum Aquificae and its different clades: proposal for division of the phylum Aquificae into the emended order Aquificales, containing the families Aquificaceae and Hydrogenothermaceae, and a new order Desulfurobacteriales ord. nov., containing the family Desulfurobacteriaceae. Antonie Van Leeuwenhoek 2013; 104:349-368.
  • 🧕 Oren and Garrity (2021) assigned this class to the phylum Aquificota Reysenbach 2021. Publication: Oren A, Garrity GM. Valid publication of the names of forty-two phyla of prokaryotes. Int J Syst Evol Microbiol 2021; 71:5056.
  • 🚃 The type genus of this class has alternatively been placed in the class Epsilobacteria Cavalier-Smith 2002. Publication: Cavalier-Smith T. The neomuran origin of archaebacteria, the negibacterial root of the universal tree and bacterial megaclassification. Int J Syst Evol Microbiol 2002; 52:7-76.
  • 🚃 The type genus of this class has alternatively been placed in the class Aquificia corrig. Reysenbach 2002. Publication: Huber R, Stetter KO, Garrity GM. Genus I. Aquifex Huber and Stetter 1992e, 656VP (Effective publication: Huber and Stetter in Huber, Wilharm, Huber, Trincone, Burggraf, König, Rachel, Rockinger, Fricke and Stetter 1992b, 349). In: Boone DR, Castenholz RW, Garrity GM (eds), Bergey's Manual of Systematic Bacteriology, second edition, vol. 1 (The Archaea and the deeply branching and phototrophic Bacteria), Springer-Verlag, New York, 2001, p. 360-362.
  • 🚃 The type genus of this class has alternatively been placed in the class Aquificia corrig. Reysenbach 2002. Publication: Cavalier-Smith T, Chao EE. Multidomain ribosomal protein trees and the planctobacterial origin of neomura (eukaryotes, archaebacteria). Protoplasma 2020; 257:621-753.
  • 🙄 This taxon name is occasionally misprinted (or affected by an OCR error) in some sources as: "Aquijicae"; "Aqulficae".
  • 📧 The e-mail address of the corresponding author given in the effective publication is not functional any more.
  • 🧍 Aquificae Reysenbach 2002 might have been considered as a later homotypic synonym of Epsilobacteria Cavalier-Smith 2002. However, Epsilobacteria Cavalier-Smith 2002 is not in accordance with the rules of the ICNP. — In Validation List no. 85, the page numbers of the effective publication are cited as "pp. 359-367". Publication: Anonymous. Validation list no. 85. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2002; 52:685-690.
  • 🧍 Nomenclatural type changed from Aquificales Reysenbach 2002 based on new Rule 22. Publication: Oren A. Emendation of Rules 8, 15, 22, 25a, 30(3)(b), 30(4), 34a, and Appendix 7 of the International Code of Nomenclature of Prokaryotes. Int J Syst Evol Microbiol 2023; 73:6070.

Parent taxon: Aquificota Reysenbach 2021

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

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Record number: 8