Methanobacillus omelianskii Bryant et al. 1967 Methanobacillus omelianskii Bryant et al. 1967 Methanobacillus omelianskii Bryant et al. 1967 This was a syntrophic culture that was later purified into M.o.H. (=DSM 863) and M.o.H.G. (=DSM 862), which serve as type material of Methanobacterium formicicum and Methanobacterium bryantii.