Methanoculleus hydrogenitrophicus
Methanoculleus submarinus
M. submarinus
Methanoculleus bourgensis
Methanoculleus chikugoensis
Methanoculleus horonobensis
Methanoculleus marisnigri
Methanoculleus palmolei
Methanoculleus receptaculi
Methanoculleus sediminis
Methanoculleus thermophilus
Methanoculleus taiwanensis
Methanoculleus oldenburgensis
Methanoculleus olentangyi