Tags: Archaea.
In taxonomy Thermococcus is a genus of extreme thermophiles in the family the Thermococcaceae.Members of the genus Thermococcus are all archaea having thermophillic-hyperthermophillic characteristics. These microorganisms are typically irregularly shaped coccoid species ranging in size from 0.6-2.0 μm in diameter. Some species of thermococcus are immobile and some species have motility using flagella as their main source of movement.