Name: Spirochaetia Paster 2020

Category: Class

Proposed as: class. nov.

Etymology: Spi.ro.chae’ti.a N.L. fem. n. Spirochaeta, type genus of the type order Spirochaetales; Gr. fem. adj. suff. -ia, ending proposed by Gibbons and Murray and by Stackebrandt et al. to denote a class; N.L. neut. pl. n. Spirochaetia, the class of Spirochaetales

Gender: neuter

Type order: Spirochaetales Buchanan 1917 (Approved Lists 1980)

Effective publication: et al. Class I. Spirochaetia class. nov. In: Krieg NR, Staley JT, Brown DR, Hedlund BP, Paster BJ, et al. (eds), Bergey's Manual of Systematic Bacteriology, 4, 2nd ed., Springer, New York, 2010, p. 471.

IJSEM list: Oren A, Garrity GM. Validation list no. 195. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2020; 70:4844-4847.

Nomenclatural status: validly published

Taxonomic status: correct name

• Synonyms:

  • Name	Kind
    Spirochaetes Cavalier-Smith 2002	homotypic synonym, validly published, rejected name
    "Leptospiria" Cavalier-Smith 2020	heterotypic synonym, not validly published
    "Spirochaetia" Cavalier-Smith 2020	homotypic synonym, not validly published

• Notes:
  • Cavalier-Smith and Chao (2020) assigned this class to the phylum "Spirochaetae" Cavalier-Smith 2002. Publication: Cavalier-Smith T, Chao EE. Multidomain ribosomal protein trees and the planctobacterial origin of neomura (eukaryotes, archaebacteria). Protoplasma 2020; 257:621-753.
  • The type order of this class has alternatively been placed in the class Schizomycetes Nägeli 1857 (Approved Lists 1980). Publication: Breed RS, Murray EG, Hitchens AP. THE OUTLINE CLASSIFICATION USED IN THE BERGEY MANUAL OF DETERMINATIVE BACTERIOLOGY. Bacteriol Rev 1944; 8:255-260.
  • The type order of this class has alternatively been placed in the class Spirochaetes 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.

Subdivision:

Number of child taxa with a validly published and correct name: 4
Number of child taxa with a validly published name, including synonyms: 4
Total number of child taxa: 5

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    Brachyspirales Gupta et al. 2014	validly published	correct name
    Brevinematales Gupta et al. 2014	validly published	correct name
    Leptospirales Gupta et al. 2014	validly published	correct name
    Spirochaetales Buchanan 1917 (Approved Lists 1980)	validly published	correct name
    [Spirochaetia, not assigned to order]	artificial parent node of taxa incertae sedis

Parent taxon: "Spirochaetes" Garrity and Holt 2001

Assigned by: Paster BJ. Phylum XV. Spirochaetes Garrity and Holt 2001. In: Krieg NR, Staley JT, Brown DR, Hedlund BP, Paster BJ, Ward NL, Ludwig W, Whitman WB (eds), Bergey's Manual of Systematic Bacteriology, 2nd edn, vol. 4, Springer, New York, 2010, p. 471.

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Record number: 13791