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- n. Plural form of hyperthermophile.
Sorry, no etymologies found.
This could indicate that life began in a high temperature environment, but an alternative interpretation is that the impacts during the cataclysm could provide a high-temperature bottleneck  through which only hyperthermophiles survived.
Their model is based on a type of virus in the archaeal kingdom called Crenarchaeota, which thrives in extremely hot, acidic environments like those found on the bottom of the ocean, where the viruses infiltrate hosts called acidophilic hyperthermophiles.
In an attempt to explain the origins of these differences, Jalasvuori and Bamford propose that mass extinctions caused by meteorites and volcanoes might have wiped out many cellular organisms, but the hyperthermophiles at the bottom of the ocean would have survived, along with their parasitic viruses.
The hyperthermophiles are already used to hot acidic conditions, and geothermal heat would protect them from snowball Earth conditions.
They have been found around scalding Pacific Ocean hydrothermal vents called “black smokers”—where “hyperthermophiles” live under pressure four hundred times greater than the Earth’s surface atmosphere and temperatures at the vent mouths can reach 750 degrees Fahrenheit.
,  and for thermal stability as proposed for PhBirA and other hyperthermophiles
and for thermal stability as proposed for PhBirA and other hyperthermophiles