Palaeococcus helgesonii,  recently discovered in the Tyrrhenian Sea, is an aerobic chemoheterotrophic that grows at temperatures of 45-85 °C with an optimal temperature of 80 °C.
Palaeococcus helgesonii, a recently discovered species in the Tyrrhenian Sea, is an aerobic chemoheterotroph capable of growth between 45-85 °C, with its optimal growth occurring at 80 °C.