Name: Actinomycetes Krassilnikov 1949 (Approved Lists 1980)
Etymology: Ac.ti.no.my.ce’tes. N.L. masc. n. Actinomyces, type genus of the class; N.L. masc. pl. n. Actinomycetes, the Actinomyces class (nominative plural of Actinomyces)
Pronunciation (Latin), gender: ak-ti-no-my-KE-tes, masculine
Type genus: Actinomyces Harz 1877 (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: correct name
| Name | Kind |
|---|---|
| Arabobacteria Cavalier-Smith 2002 | heterotypic synonym, validly published under the ICNP, rejected name |
| Actinomycetia Salam et al. 2020 | homotypic synonym, validly published under the ICNP, illegitimate name |
| Actinobacteria Stackebrandt et al. 1997 | homotypic synonym, validly published under the ICNP, illegitimate name |
| Arthrobacteria Cavalier-Smith 2002 | homotypic synonym, validly published under the ICNP, rejected name |
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Number of child taxa with a validly published and correct name: 21
Number of child taxa with a validly published name, including synonyms: 40
Total number of child taxa: 42
| Name | Nomenclatural status | Taxonomic status |
|---|---|---|
| Acidothermales Sen et al. 2014 | validly published under the ICNP | correct name |
| Actinocatenisporales Salam et al. 2020 | validly published under the ICNP | synonym |
| Actinomycetales Buchanan 1917 (Approved Lists 1980) | validly published under the ICNP | correct name |
| Actinoplanales Cavalier-Smith 2002 | validly published under the ICNP, rejected name | synonym |
| Actinopolysporales Goodfellow and Trujillo 2015 | validly published under the ICNP | synonym |
| Allobogoriellales Deshmukh and Oren 2025 | validly published under the ICNP | synonym |
| Antricoccales Salam et al. 2020 | validly published under the ICNP | synonym |
| Aquipuribacterales Salam et al. 2020 | validly published under the ICNP | synonym |
| Beutenbergiales Salam et al. 2020 | validly published under the ICNP | synonym |
| Bifidobacteriales Stackebrandt et al. 1997 | validly published under the ICNP | correct name |
| Bogoriellales Salam et al. 2020 | validly published under the ICNP, illegitimate name | synonym |
| Brevibacteriales Salam et al. 2020 | validly published under the ICNP | synonym |
| Catenulisporales Donadio et al. 2015 | validly published under the ICNP | correct name |
| Cellulomonadales Salam et al. 2020 | validly published under the ICNP | synonym |
| Corynebacteriales Goodfellow and Jones 2015 | validly published under the ICNP, illegitimate name | synonym |
| Cryptosporangiales Nouioui et al. 2018 | validly published under the ICNP | correct name |
| Demequinales Salam et al. 2020 | validly published under the ICNP | synonym |
| Dermabacterales Salam et al. 2020 | validly published under the ICNP | synonym |
| Dermatophilales Salam et al. 2020 | validly published under the ICNP | synonym |
| Frankiales Sen et al. 2014 | validly published under the ICNP | correct name |
| Geodermatophilales Sen et al. 2014 | validly published under the ICNP | correct name |
| Glycomycetales Labeda 2015 | validly published under the ICNP | correct name |
| Jatrophihabitantales Salam et al. 2020 | validly published under the ICNP | correct name |
| Jiangellales Tang et al. 2015 | validly published under the ICNP | correct name |
| Kineosporiales Kämpfer 2015 | validly published under the ICNP | correct name |
| Kitasatosporales Kämpfer 2022 | validly published under the ICNP | correct name |
| Microbacteriales Salam et al. 2020 | validly published under the ICNP | synonym |
| Micrococcales Prévot 1940 (Approved Lists 1980) | validly published under the ICNP | correct name |
| Micromonosporales Genilloud 2015 | validly published under the ICNP | correct name |
| Motilibacterales Salam et al. 2020 | validly published under the ICNP | correct name |
| "Motilibacterales" Feng et al. 2020 | not validly published | synonym |
| Mycobacteriales Janke 1924 (Approved Lists 1980) | validly published under the ICNP | correct name |
| Mycobacteriales Cavalier-Smith 2002 | validly published under the ICNP, illegitimate name | synonym |
| Nakamurellales Sen et al. 2014 | validly published under the ICNP | correct name |
| Phytomonosporales Salam et al. 2020 | validly published under the ICNP | synonym |
| Propionibacteriales (Rainey et al. 1997) Patrick and McDowell 2015 | validly published under the ICNP | correct name |
| Pseudonocardiales Labeda and Goodfellow 2015 | validly published under the ICNP | correct name |
| Ruaniales Salam et al. 2020 | validly published under the ICNP | synonym |
| Sporichthyales Nouioui et al. 2018 | validly published under the ICNP | correct name |
| "Streptomycetales" (Rainey et al. 1997) Kämpfer 2012 | not validly published | synonym |
| Streptomycetales Cavalier-Smith 2002 | validly published under the ICNP, rejected name | synonym |
| Streptosporangiales Goodfellow 2015 | validly published under the ICNP | correct name |
Parent taxon: Actinomycetota Goodfellow 2021
Assigned by:
Arahal et al. Judicial Opinion No. 122. Int J Syst Evol Microbiol 2022; 72:5481.
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