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By using gas chromatograph (GC) and GC–mass spectrometry, a series of biomarkers were identified in the aliphatic fractions of extracts from microbialites following the end-Permian faunal mass extinction in Chongyang section, Hubei Province, South China. The dominance of lower-molecular-weight n-alkanes in the samples from the section suggests that algae and bacteria were the dominant contributors...
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