Bacteroidota

The phylum Bacteroidota (synonym Bacteroidetes) is composed of three large classes of Gram-negative, nonsporeforming, anaerobic or aerobic, and rod-shaped bacteria that are widely distributed in the environment, including in soil, sediments, and sea water, as well as in the guts and on the skin of animals.

Sphingobacteriia is a taxonomic class composed of a single order of environmental bacteria that are capable of producing sphingolipids. The earlier name Sphingibacteria was changed in 2011.

The class Flavobacteriia is composed of a single class of environmental bacteria. It contains the family Flavobacteriaceae, which is the largest family in the phylum Bacteroidota.'''''' This class is widely distributed in soil, fresh, and seawater habitats. The name is often spelt Flavobacteria, but was officially named Flavobacteriia in 2012.

Cytophagales is an order of non-spore forming, rod-shaped, Gram-negative bacteria that move through a gliding or flexing motion. These chemoorganotrophs are important remineralizers of organic materials into micronutrients. They are widely dispersed in the environment, found in ecosystems including soil, freshwater, seawater and sea ice. Cytophagales is included in the Bacteroidota phylum.

The family Saprospiraceae is composed of environmental bacteria. The members of this family are important to the breakdown of complex organic compounds in the environment.

Chitinophagaceae is an aerobic or facultatively anaerobic and rod-shaped family of bacteria in the phylum Bacteroidota.