We found a matchYour institution may have access to this item. Find your institution then sign in to continue.Title2-Methylhopanoids as biomarkers for cyanobacterial oxygenic photosynthesis.AuthorsSummons RE; Jahnke LL; Hope JM; Logan GAPublicationNature, 1999, Vol 400, Issue 6744, p554ISSN0028-0836Publication typearticleDOI10.1038/23005