Selenomonadaceae

The Selenomonadaceae are a family of Gram-negative, anaerobic, non-spore-forming, rod-shaped bacteria in the order Selenomonadales and class Negativicutes. Members of the family occur in animal-associated and environmental habitats, including the gastrointestinal tract, oral cavity, wastewater, and brewery environments.

Taxonomy

The family was established during a genome-based reorganization of the class Negativicutes that separated its members among the orders Selenomonadales, Acidaminococcales, and Veillonellales. Its nomenclatural type is the genus Selenomonas.

A subsequent phylogenomic reassessment found that several species then classified in Selenomonas belonged to distinct genus-level lineages. Among the resulting changes, species were transferred to Centipeda and the newly established genera Dongibacter, Pseudoselenomonas, Schleiferibacter, and Wylensekiella. LPSN recognizes 12 genera with validly published and correct names in the family.

Phylogeny

The nomenclature and family membership shown below follow LPSN. The branching order was derived from the 120-marker-protein bacterial tree of GTDB release R11-RS232, using one represented species for each genus and displaying only the genus names.