Fig. 8: Genus-level taxonomic tree derived from 1.5 g (three replicates) of ~2930 Ma-old oxide iron formation samples, collected from a depth of approximately of 67.8 m, within the carbonate platform of the Red Lake area.
From: Fragmented deoxyribonucleic acid could be extractable from Mars’s surface rocks

The analysis compares microbiome diversity between non-irradiated samples (left) and samples exposed to a radiation dose of 10.45 MGy (right), simulating the equivalent of 136 million years of exposure on Mars.