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Pyrolobus fumarii is a prokaryotic organism belonging to the domain Archaea. Prokaryotes are organisms whose cells lack a defined nucleus. Pyrolobus fumarii is known for its ability to thrive in extreme environments, specifically holding the record for the highest temperature limit for life at 113 °C (235 °F), and was discovered living in hydrothermal vents. This organism exemplifies the extremophile nature of many archaea, which define the limits of life on Earth.1

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2 Britannica Sources
  1. Thermoplasma
  2. archaea

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