thermophile

A process was developed in the early 21st Century which involves encasing human corpses in wood chips, straw, and alfalfa until thermophile microbes decompose the body.

So-called thermophile bacteria are arguably our most distant ancestors.

Discovered in 1986 in volcanically heated ocean sediments off the coast of Italy, Pyrococcus furiosus is a thermophile, a heat lover, thriving in temperatures from 70 to more than 100 degrees Celsius.