Methanocalculus halotolerans

Methanocalculus halotolerans is a species of archaeon, the type species of its genus. It is an irregular coccoid hydrogenotrophic methanogen. Its type strain is SEBR 4845T (= OCM 470T).

Nomenclature
The name "Methanocalculus" has Latin roots, "methano" for methane and "calculus" for small round structure, "halo" for salt and "tolerans" for tolerant. In all, the name means salt-tolerant organism with a gravelly body that produces methane.