| T00003 | mja | Methanocaldococcus jannaschii |
| T00976 | mfe | Methanocaldococcus fervens |
| T01105 | mvu | Methanocaldococcus vulcanius |
| T01175 | mfs | Methanocaldococcus sp. FS406-22 |
| T01234 | mif | Methanocaldococcus infernus |
| T03253 | mjh | Methanocaldococcus bathoardescens |
| T07631 | mesg | Methanocaldococcus lauensis SG7 |
| T07808 | mesa | Methanocaldococcus lauensis SG1 |
Genus: Methanocaldococcus