| Name | Class | Order | Family | Genus |
|---|---|---|---|---|
| Methanocalculus chunghsingensis | Methanomicrobia | Methanomicrobiales | Methanocalculaceae | Methanocalculus |
| Methanocalculus halotolerans | Methanomicrobia | Methanomicrobiales | Methanocalculaceae | Methanocalculus |
| Methanocalculus natronophilus | Methanomicrobia | Methanomicrobiales | Methanocalculaceae | Methanocalculus |
| Methanocalculus pumilus | Methanomicrobia | Methanomicrobiales | Methanocalculaceae | Methanocalculus |
| Methanocalculus taiwanensis | Methanomicrobia | Methanomicrobiales | Methanocalculaceae | Methanocalculus |