shimazuella shimazuella shimazuella is a gram-positive, aerobic and mesophilic bacterial genus from the family of thermoactinomycetaceae. up to now there is only one species of this genus known (shimazuella kribbensis). shimazuella scientific classification domain: bacteria phylum: bacillota class: bacilli order: bacillales family: thermoactinomycetaceae genus: shimazuellapark et al. 2007 type species shimazuella kribbensis species s. kribbensis