Euryarchaeota

There are over 50 described species of methanogens, sharing over 30 signature proteins.

Halophiles are extremophiles that thrive in environments with very high concentrations of salt.

Methanogens are an important group of microoraganisms that produce methane as a metabolic byproduct under anaerobic conditions.

There are many classes in the phylum Euryarchaeota, many of which are extremophiles.

Archaeoglobus is a genus of Euryarchaeota found in high-temperature oil fields.

Nanoarchaeum equitans is a species of marine Archaea discovered in a hydrothermal vent off the coast of Iceland.

A hyperthermophile is an organism that thrives in extremely hot environments, from 60 degrees C (140 degrees F) and up.