Actinomyces bifidus Dataset NCBI Taxonomy Classification phylum Actinomycetota class Actinomycetes order Bifidobacteriales family Bifidobacteriaceae genus Bifidobacterium species Bifidobacterium bifidum Name Homonyms "Actinomyces bifidus" (Tissier 1900) Nannizzi 1934 Actinomyces bifidus