In taxonomy, Staphylothermus is a genus of the Desulfurococcaceae.[1] Desulfurococcaceae areanaerobic, sulfur respiring, extreme thermophiles. Desulfurococcaceae share the same family as Desulfurococcus. There are two species of Staphylothermus that have been identified. They are Staphylothermus marinus and Staphylothermus hellenicus. They are both heterotrophic, anaerobic members of Domain Archea.