Creanarchaeota are a phylum of Archaea containing many extremely thermophilic organisms.

This phylum contains:

• Thermoprotei
  • Caldisphaerales
    • Caldisphaeraceae
  • Cenarchaeales
    • Cenarchaeaceae
  • Desulfurococcales
    • Desulfurococcaceae
    • Pyrodictiaceae
  • Sulfolobales
    • Sulfolobaceae
  • Thermoproteales
    • Thermofiliaceae
    • Thermoproteaceae\n