Members of this family are distinguished from the other family (Pyrodictiaceae) in the order Desulfurococcales by having an optimal growth temperature below 100 °C, rather than above 100 °C, and by being more diverse.
Members of this family are distinguished from the other family (Pyrodictiaceae) in the order Desulfurococcales by having an optimal growth temperature that is lower than 100 degrees Celsius and being more diverse compared to the Pyrodictiaceae family.