Biotic molecular samples exhibit consistently higher diversity than abiotic ones, providing a statistical biosignature based on relative abundances that persists under degradation.
T.et al.Non-avian dinosaur eggshell calcite can contain ancient, endogenous amino acids.Geochimica et Cosmochimica Acta365, 1–20 (2024)
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Molecular diversity as a biosignature
Biotic molecular samples exhibit consistently higher diversity than abiotic ones, providing a statistical biosignature based on relative abundances that persists under degradation.