Pyrococcus furiosus
Pyrococcus furiosus is a heterotrophic, strictly anaerobic, extremophilic, model species of archaea. Wikipedia
Domain: Archaea
Kingdom: Euryarchaeota
Class: Thermococci
Scientific name: Pyrococcus furiosus
Order: Thermococcales
Family: Thermococcaceae
Genus: Pyrococcus