muribaculum muribaculum muribaculum is a genus from the family of muribaculaceae (formerly porphyromonadaceae), with one known species (muribaculum intestinale). muribaculum scientific classification domain: bacteria phylum: bacteroidota class: bacteroidia order: bacteroidales family: muribaculaceae genus: muribaculumlagkouvardos et al. 2016 species m. intestinale