Tags: Archaea.
In taxonomy Pyrodictium is a genus of the Pyrodictiaceae. It is a genus of submarine hyperthermophilic archaea whose optimal growth temperature ranges is 80 to 105 °C. They have a unique cell structure involving a network of cannulae and flat disk-shaped cells. Pyrodictium are found in the porous walls of deep-sea vents where the temperatures inside get as high as 400 °C while the outside marine environment is typically 3 °C.