Etymology:Gr. neut. n. [δέλτα]delta, the letter d; Gr. neut. n. [βακτηρία]baktêria, staff, cane; N.L. neut. adj. suff.-ia, ending to denote a class; N.L. neut. pl. n.Deltabacteria, name proposed to formalize the customary designation as δ-proteobacteria
Cavalier-Smith (2002) assigned this class to the subphylum "Thiobacteria" 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.
The type order of this class has been placed in the class Deltaproteobacteria Kuever et al. 2006.Publication:
Kuever J, Rainey FA, Widdel F. Class IV. Deltaproteobacteria 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. 922.
The type order of this class has alternatively been placed in the class Myxococcia Waite et al. 2020.Publication:
Waite DW, Chuvochina M, Pelikan C, Parks DH, Yilmaz P, Wagner M, Loy A, Naganuma T, Nakai R, Whitman WB, et al. Proposal to reclassify the proteobacterial classes Deltaproteobacteria and Oligoflexia, and the phylum Thermodesulfobacteria into four phyla reflecting major functional capabilities. Int J Syst Evol Microbiol 2020; 70:5972-6016.
Irregularly formed name (not formed from the stem of the name of the nomenclatural type). Rejected Name (Judicial Commission, Opinion 79 suppl.; IJSEM 64: 3599–3602).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.
Deltabacteria was previously known as "Deltabacteria" Cavalier-Smith 1992. — Deltabacteria Cavalier-Smith 2002 is an earlier homotypic synonym of Deltaproteobacteria Kuever et al. 2006.
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