The genus Brevibacillus was established in the year
1996, derived by a genetic reclassification of strains
previously allotted to the Bacillus brevis group.
B. brevis was first described in (Migula 1900) and
reclassified as a species belonging to the novel genus
Brevibacillus, along with nine other species (Shida et al.
1996). Results of a gene sequence study by Shida et al.
(1996) demonstrated that the B. brevis cluster includes
ten species, i.e., B. brevis, B. agri, B. centrosporus,
B.choshinensis, B. parabrevis, B. reuszeri, B. formosus,
B. borstelensis, B. laterosporus, and B. thermoruber.
Currently, the genus Brevibacillus includes 20 species
(Fig. 1; Table 1) with published names