enterocloster lavalensis enterocloster lavalensis enterocloster lavalensis, formerly clostridium lavalense is an anaerobic, motile, spore-forming, rod-shaped, gram-positive bacterium first isolated from human feces. the epithet "lavalense" refers to the institution, université laval, québec, canada. enterocloster lavalensis scientific classification domain: bacteria phylum: bacillota class: clostridia order: eubacteriales family: lachnospiraceae genus: enterocloster species: e. lavalensis binomial name enterocloster lavalensis(domingo et al. 2009) haas and blanchard 2020 synonyms clostridium lavalense