Related how?

Biota (Life)
Prokaryotes (Prokaryota)
Archaea (Archaebacteria)
Crenarchaeota

Thermoprotei (1953103)

Children (6 direct children, 148 direct and indirect children):

Thermoproteales (tree size 31)

Desulfurococcales (tree size 49)

Acidilobales (tree size 9)

Sulfolobales (tree size 50)

Fervidicoccales (tree size 3)

Acidolobales