the root (no rank)
Bacteria (domain)
Firmicutes (phylum)
Clostridia (class)
Clostridiales (order)
Clostridiaceae (family)
Ruminococcus (genus)
[hide inferior taxa]
Ruminococcus albus (species)
Ruminococcus flavefaciens (species)
Ruminococcus gauvreauii (species)
Ruminococcus gnavus (species)
Ruminococcus hansenii (species)
Ruminococcus sp. (species)