Class Betaproteobacteria
Name: Betaproteobacteria Garrity et al. 2006
Etymology: Be.ta.pro.te.o.bac.te’ri.a Gr. n. beta, name of the second letter of Greek alphabet; Gr. masc. n. Proteus, Greek god of the sea, capable of assuming many different shapes; N.L. masc. n. bacter, a rod; Gr. fem. adj. suff. -ia, ending to denote a class; N.L. neut. pl. n. Betaproteobacteria, a class of bacteria included in the phylum Proteobacteria and having 16S rRNA gene sequences related to those of the members of the order Spirillales
Type order: Burkholderiales Garrity et al. 2006
Effective publication: Garrity GM, Bell JA, Lilburn T. Class II. Betaproteobacteria class. nov. In: Brenner DJ, Krieg NR, Staley JT, Garrity GM (eds), Bergey's Manual of Systematic Bacteriology, 2nd edn, vol. 2 (The Proteobacteria), part C (The Alpha-, Beta-, Delta-, and Epsilonproteobacteria), Springer, New York, 2005, p. 575.
IJSEM list:
Euzeby JP. Validation list no. 107. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2006; 56:1-6. 
Nomenclatural status: validly published
Taxonomic status: correct name
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Emendations:
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Boden et al. 2017
Boden R, Hutt LP, Rae AW. Reclassification of Thiobacillus aquaesulis (Wood & Kelly, 1995) as Annwoodia aquaesulis gen. nov., comb. nov., transfer of Thiobacillus (Beijerinck, 1904) from the Hydrogenophilales to the Nitrosomonadales, proposal of Hydrogenophilalia class. nov. within the 'Proteobacteria', and four new families within the orders Nitrosomonadales and Rhodocyclales. Int J Syst Evol Microbiol 2017; 67:1191-1205.
Oren A, Garrity GM. Notification list. Notification that new names and new combinations have appeared in volume 67, part 5 of the IJSEM. Int J Syst Evol Microbiol 2017; 67:2495-2498.
Notes:- Emendation accompanied by the removal of 1 order from the class.
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Boden et al. 2017
Boden R, Hutt LP, Rae AW. Reclassification of Thiobacillus aquaesulis (Wood & Kelly, 1995) as Annwoodia aquaesulis gen. nov., comb. nov., transfer of Thiobacillus (Beijerinck, 1904) from the Hydrogenophilales to the Nitrosomonadales, proposal of Hydrogenophilalia class. nov. within the 'Proteobacteria', and four new families within the orders Nitrosomonadales and Rhodocyclales. Int J Syst Evol Microbiol 2017; 67:1191-1205.
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Notes:
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Cavalier-Smith (2006) assigned this class to the subphylum "Rhodobacteria" Cavalier-Smith 2002.
Publication:
Cavalier-Smith T. Rooting the tree of life by transition analyses. Biol Direct 2006; 1:19.
- This taxon name is occasionally misprinted in some sources as: "Betaprobacteria"; "Betaprotebacteria"; "Betaprotobacteria".
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Cavalier-Smith (2006) assigned this class to the subphylum "Rhodobacteria" Cavalier-Smith 2002.
Publication:
Cavalier-Smith T. Rooting the tree of life by transition analyses. Biol Direct 2006; 1:19.
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: 7
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Child taxa:
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Name Nomenclatural status Taxonomic status [Betaproteobacteria, not assigned to order] artificial parent node of taxa incertae sedis Burkholderiales Garrity et al. 2006 validly published correct name "Ferritrophicales" Weiss et al. 2007 not validly published Neisseriales Tønjum 2006 validly published correct name Nitrosomonadales Garrity et al. 2006 validly published correct name "Procabacteriales" Garrity et al. 2003 not validly published Rhodocyclales Garrity et al. 2006 validly published correct name
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Parent taxon: "Proteobacteria" Garrity et al. 2005
Assigned by: Garrity GM, Bell JA, Lilburn T. Class III. Gammaproteobacteria class. nov. In: Brenner DJ, Krieg NR, Staley JT, Garrity GM (eds), Bergey's Manual of Systematic Bacteriology, 2nd edn, vol. 2 (The Proteobacteria), part B (The Gammaproteobacteria), Springer, New York, 2005, p. 1.
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