The family 'Bacteroidaceae' is composed of five genera of environmental bacteria.Bergey's Manual of Systematic Bacteriology, 2nd ed., vol. 1 (The Archaea and the deeply branching and phototrophic Bacteria) (D.R. Boone and R.W. Castenholz, eds.), Springer- Verlag, New York (2001). pp. 465-466. The genus Capsularis used to exist prior to 1982, but its only species, B. zoogleoformans, was later deemed to be more closely related to the genus Bacteroides.
Microbial Abundance Data: Bacteroidaceae (Percent of total population with standard deviation [PMID: 22698087])