The Thermomicrobia are a group of thermophilic green non-sulfur bacteria

Bacteria

Bacteria are a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria have a wide range of shapes, ranging from spheres to rods and spirals...

. Until 2004, they were classified as a distinct phylum. It has recently been proposed, on the basis of an analysis of genetic affiliations, that the Thermomicrobia should more properly be reclassified as a class

Class (biology)

In biological classification, class is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, order, family, genus, and species, with class fitting between phylum and order...

 belonging to the phylum chloroflexi

Chloroflexi (phylum)

The Chloroflexi or Chlorobacteria are a phylum of bacteria containing isolates with a diversity of phenotypes including members that are aerobic thermophiles, which use oxygen and grow well in high temperatures, anoxygenic phototrophs, which use light for photosynthesis, and anaerobic...

. The bacteria Sphaerobacter thermophilus originally described as an Actinobacteria is now considered a Thermomicrobia.

Taxonomy

Class Thermomicrobia

Thermomicrobia

The Thermomicrobia are a group of thermophilic green non-sulfur bacteria. Until 2004, they were classified as a distinct phylum. It has recently been proposed, on the basis of an analysis of genetic affiliations, that the Thermomicrobia should more properly be reclassified as a class belonging to...

• Genus Thermobaculum♠ Botero et al. 2004
  • Thermobaculum terrenum♠ Botero et al. 2004
• Order Thermomicrobiales
  • Family Thermomicrobiaceae
    • Genus Thermomicrobium Jackson et al. 1973
      • Thermomicrobium roseum Jackson et al. 1973
• Order Sphaerobacterales
  • Family Sphaerobacteraceae
    • Genus Sphaerobacter
      Sphaerobacter
      Sphaerobacter is a genus of bacteria when originally described was placed in its own subclass whitin the class Actinobacteria. Subsequently phylogenetic studies has now placed it in its own order Sphaerobacterales whitin the phylum Chloroflexi....
      
      Demharter et al. 1989
      • Sphaerobacter thermophilus Demharter et al. 1989

Note:

♠ Strain found at the National Center for Biotechnology Information

National Center for Biotechnology Information

The National Center for Biotechnology Information is part of the United States National Library of Medicine , a branch of the National Institutes of Health. The NCBI is located in Bethesda, Maryland and was founded in 1988 through legislation sponsored by Senator Claude Pepper...

 (NCBI) but has no standing with the Bacteriological Code (1990 and subsequent Revision) as detailed by List of Prokaryotic names with Standing in Nomenclature (LPSN) as a result of the following reasons:

• No pure culture isolated or available for Prokayotes.

• Not validly published because the effective publication only documents deposit of the type strain in a single recognized culture collection.

• Not approved and published by the International Journal of Systematic Bacteriology or the International Journal of Systematic and Evolutionary Microbiology

International Journal of Systematic and Evolutionary Microbiology

The International Journal of Systematic and Evolutionary Microbiology is a peer-reviewed scientific journal in the field of microbial systematics, first published in 1951...

(IJSB/IJSEM).