Mycoplasmatota

Mycoplasmatota is a phylum of bacteria that contains the class Mollicutes. The phylum was originally named "Tenericutes". Notable genera include Mycoplasma, Spiroplasma, Ureaplasma, and Candidatus Phytoplasma. Moreover, it lacks a cell wall, its cells and genome sizes are small, and has a low guanine plus cytosine ratio. Due to being one of the smallest bacteria, animals are prone to a disease without showing any type of symptoms, thus serving as carriers and ultimately contribution to the spread of disease.
This phylum was first published as Tenericutes by Murray in a 1984 version of Bergey's Manual. It was republished in 2021 by Oren and Garrity under the revised Prokaryotic Code.
This phylum is not phylogenetically sound: it branches within Bacillota in phylogenomic and 16S analyses. See also.