acutalibacter acutalibacter acutalibacter is a genus of bacteria from the family of ruminococcaceae with one known species (acutalibacter muris). acutalibacter muris has been isolated from the feces of a mouse from munich in germany. acutalibacter scientific classification domain: bacteria phylum: bacillota class: clostridia order: eubacteriales family: oscillospiraceae genus: acutalibacterlagkouvardos et al. 2016 type species acutalibacter muris species a. muris