Class Mollicutes

Warning: In the List of Prokaryotic names with Standing in Nomenclature, an arrow () only indicates the sequence of valid publication of names and does not mean that the last name in the sequence must be used (see: Introduction).

Classification (Warning: see also the file "Classification of prokaryotes: Introduction").

For a detailed description of this taxon see Bergey’s Manual of Systematics of Archaea and Bacteria (BMSAB).


Mollicutes Edward and Freundt 1967, classis.
Type order: not given.
Synonym: "Paramycetes" Sabin 1941.
Etymology: L. adj. mollis, easily movable, pliant, flexible; L. fem. n. cutis, the skin; N.L. fem. pl. n. Mollicutes, class with pliable cell boundary.
Approved Lists reference: SKERMAN (V.B.D.), McGOWAN (V.) and SNEATH (P.H.A.) (editors): Approved Lists of Bacterial Names. Int. J. Syst. Bacteriol., 1980, 30, 225-420 (Approved Lists of Bacterial Names in IJSEM Online - Approved Lists of Bacterial Names Amended edition).
Original publication: EDWARD (D.G.) and FREUNDT (E.A.): Proposal for Mollicutes as name of the class established for the order Mycoplasmatales. International Journal of Systematic Bacteriology, 1967, 17, 267-268.

Note: According to Rules 15, 22 and 27(3), the class Mollicutes is illegitimate because it was proposed without the designation of a nomenclatural type.
Reference: EUZÉBY (J.P.) and TINDALL (B.J.): 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.
Original article in IJSEM Online