| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Pyrodictium abyssi | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Pyrodictium | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Pyrococcus yayanosii | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Pyrococcus woesei | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Pyrococcus kukulkanii | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Pyrococcus horikoshii | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Pyrococcus glycovorans | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Pyrococcus furiosus T | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Pyrococcus | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Pyrobaculum organotrophum | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Pyrobaculum oguniense | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Pyrobaculum neutrophilum | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Pyrobaculum islandicum T | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Pyrobaculum igneiluti | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Pyrobaculum ferrireducens | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Pyrobaculum calidifontis | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Pyrobaculum arsenaticum | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Pyrobaculum aerophilum | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Pyrobaculum | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Pyrinomonas methylaliphatogenes T | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Pyrinomonas | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Pyrinomonadaceae | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Pyramidobacter piscolens T | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Pyramidobacter | ||||
| Puzihella rosea T | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Puzihella | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Putridiphycobacter roseus T | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Putridiphycobacter | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Puteibacter caeruleilacunae T | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Puteibacter | Unknown | Valid (ICNP) | Excubia bot about 5 years ago |