"Ancyromonas ruminantium" Certes 1889 Dataset NCBI Taxonomy Classification phylum Bacillota class Negativicutes order Selenomonadales family Selenomonadaceae genus Selenomonas species Selenomonas ruminantium Name Homonyms Ancyromonas ruminantium "Ancyromonas ruminantium" Certes 1889