Name: Actinomycetes Krassilnikov 1949 (Approved Lists 1980)

Category: Class

Proposed as: class. nov.

Etymology: N.L. masc. n. Actinomyces, one genus of the class; N.L. neut. pl. n. Actinomycetes, the Actinomyces class

Gender: neuter

Type order: Actinomycetales Buchanan 1917 (Approved Lists 1980)

Effective publication: Krassilnikov NA. Opredelitelv Bakterii i Actinomicetov. Akademii Nauk SSSR, Moscow, 1949.

IJSEM list: Skerman VBD, McGowan V, Sneath PHA. Approved lists of bacterial names. Int J Syst Bacteriol 1980; 30:225-420.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym

Correct name: Actinobacteria Stackebrandt et al. 1997

• Synonyms:

  • Name	Kind
    Arabobacteria Cavalier-Smith 2002	heterotypic synonym, validly published under the ICNP, rejected name
    Actinobacteria Stackebrandt et al. 1997	heterotypic synonym, validly published under the ICNP, illegitimate name
    Actinomycetia (Stackebrandt et al. 1997) Salam et al. 2020	homotypic synonym, validly published under the ICNP
    Arthrobacteria Cavalier-Smith 2002	homotypic synonym, validly published under the ICNP, rejected name
    Streptomycetes Cavalier-Smith 2002	heterotypic synonym, validly published under the ICNP, rejected name

• Notes:
  • Goodfellow and Williams (1983) assigned the uncategorized "Maduromycetes" Goodfellow and Williams 1983 to this class. Publication: Goodfellow M, Williams ST. Ecology of Actinomycetes. Ann. Rev. Microbiol. 1983; 37:189-216.
  • Goodfellow and Williams (1983) assigned the uncategorized "Actinoplanetes" Goodfellow and Williams 1983 to this class. Publication: Goodfellow M, Williams ST. Ecology of Actinomycetes. Ann. Rev. Microbiol. 1983; 37:189-216.
  • Goodfellow and Williams (1983) assigned the uncategorized "Actinobacteria" Goodfellow and Williams 1983 to this class. Publication: Goodfellow M, Williams ST. Ecology of Actinomycetes. Ann. Rev. Microbiol. 1983; 37:189-216.
  • Goodfellow and Williams (1983) assigned the uncategorized "Micropolysporas" Goodfellow and Williams 1983 to this class. Publication: Goodfellow M, Williams ST. Ecology of Actinomycetes. Ann. Rev. Microbiol. 1983; 37:189-216.
  • Goodfellow and Williams (1983) assigned the uncategorized "Multilocular" Goodfellow and Williams 1983 to this class. Publication: Goodfellow M, Williams ST. Ecology of Actinomycetes. Ann. Rev. Microbiol. 1983; 37:189-216.
  • Goodfellow and Williams (1983) assigned the uncategorized "Nocardioform" Goodfellow and Williams 1983 to this class. Publication: Goodfellow M, Williams ST. Ecology of Actinomycetes. Ann. Rev. Microbiol. 1983; 37:189-216.
  • Goodfellow and Williams (1983) assigned the uncategorized "Streptomycetes" Goodfellow and Williams 1983 to this class. Publication: Goodfellow M, Williams ST. Ecology of Actinomycetes. Ann. Rev. Microbiol. 1983; 37:189-216.
  • Goodfellow and Williams (1983) assigned the uncategorized "Thermomonosporas" Goodfellow and Williams 1983 to this class. Publication: Goodfellow M, Williams ST. Ecology of Actinomycetes. Ann. Rev. Microbiol. 1983; 37:189-216.
  • The type order of this class has been placed in the class Actinobacteria Stackebrandt et al. 1997. Publication: Nouioui I, Carro L, Garcia-Lopez M, Meier-Kolthoff JP, Woyke T, Kyrpides NC, Pukall R, Klenk HP, Goodfellow M, Goker M. Genome-Based Taxonomic Classification of the Phylum Actinobacteria. Front Microbiol 2018; 9:2007.
  • The type order of this class has alternatively been placed in the class Schizomycetes Nägeli 1857 (Approved Lists 1980). Publication: Winslow CE, Broadhurst J, Buchanan RE, Krumwiede C, Rogers LA, Smith GH. The Families and Genera of the Bacteria: Final Report of the Committee of the Society of American Bacteriologists on Characterization and Classification of Bacterial Types. J Bacteriol 1920; 5:191-229.
  • This taxon name is occasionally misprinted in some sources as: "Acinomycetes"; "Acrinomycete"; "Actinimycetes"; "Actinomycetalis"; "Actinomycetos"; "Actinomytcetes"; "Actionmycetes"; "Antinomycetes".
  • This taxon name is occasionally used in singular form as: "Actinomycete".
  • Actinomycetes is the correct name if this class is regarded as a separate class (i.e., if its nomenclatural type is not assigned to another class whose name is validly published, legitimate and not rejected and has priority).
  • According to Tindall (2014) the type order is Actinomycetales Buchanan 1917. Publication: Tindall BJ. Names at the rank of class, subclass and order, their typification and current status: Supplementary information to Opinion 79. Judicial Commission of the International Committee on Systematics of Prokaryotes. Int J Syst Evol Microbiol 2014; 64:3599-3602.
  • This name was mentioned in a Request for an Opinion. Publication: Oren A, Parte A, Garrity GM. Implementation of Rule 8 of the International Code of Nomenclature of Prokaryotes for the renaming of classes. Request for an Opinion. Int J Syst Evol Microbiol 2016; 66:4296-4298.
  • Rule 22 indicates that the type of a taxon higher than order may be later designated by an Opinion of the Judicial Commission. Publication: Euzeby JP, Tindall BJ. Nomenclatural type of orders: corrections necessary according to Rules 15 and 21a of the Bacteriological Code (1990 Revision), and designation of appropriate nomenclatural types of classes and subclasses. Request for an opinion. Int J Syst Evol Microbiol 2001; 51:725-727.
  • The class Actinomycetes was originally proposed without the designation of a nomenclatural type, thus contravening Rules 15, 22 and 27(3). Publication: Euzeby JP, Tindall BJ. Nomenclatural type of orders: corrections necessary according to Rules 15 and 21a of the Bacteriological Code (1990 Revision), and designation of appropriate nomenclatural types of classes and subclasses. Request for an opinion. Int J Syst Evol Microbiol 2001; 51:725-727.

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Record number: 3