| Name | Class | Order | Family | Genus |
|---|---|---|---|---|
| Methanococcoides alaskense | Methanomicrobia | Methanosarcinales | Methanosarcinaceae | Methanococcoides |
| Methanococcoides burtonii | Methanomicrobia | Methanosarcinales | Methanosarcinaceae | Methanococcoides |
| Methanococcoides methylutens | Methanomicrobia | Methanosarcinales | Methanosarcinaceae | Methanococcoides |
| Methanococcoides vulcani | Methanomicrobia | Methanosarcinales | Methanosarcinaceae | Methanococcoides |