Claim: Methanopyri In taxonomy, the Methanopyri are a class of the Euryarchaeota, euryarchaetota is a phylum of archaea.   It is one of two phyla of archaea, the other being crenarchaeota.
Evidence: In taxonomy, the Methanopyri are a class of the Euryarchaeota. Euryarchaeota (Greek for "broad old quality") is a phylum of archaea. It is one of two phyla of archaea, the other being crenarchaeota.