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Thesaurus

biomarkers
UF	biological markers
	molecular fossils
RT	organic compounds
	aromatic hydrocarbons
	alkanes
	alkenones
	biostratigraphy
	asphalt
	biodegradation
	first occurrence
	chemical fossils
	diasteranes
	diterpanes
	gammacerane
	geochemical indicators
	hopanes
	hopanoids
	moretanes
	n-alkanes
	oleananes
	porphyrins
	saturat
SN	Added to Thesaurus in 1989.