is a species of the class Clostridia in the family Ruminococcaceae and order Clostridiales.
Ruminococcus albus
Ruminococcus bromii
Ruminococcus callidus
Ruminococcus champanellensis
Ruminococcus faecis
Ruminococcus flavefaciens
Ruminococcus gauvreauii
Ruminococcus gnavus
Ruminococcus lactaris
Ruminococcus obeum
Ruminococcus torques