Questioning the evidence for Earth's oldest fossils

Raman Spectrum of Graphite

F. Tuinstra, Jack L. Koenig · The Journal of Chemical Physics · 1970 · 10.6K citations

Natural Sciences, Materials Engineering, Materials Science +15

The use of bromine pentafluoride in the extraction of oxygen from oxides and silicates for isotopic analysis

Robert N. Clayton, T. K. Mayeda · Geochimica et Cosmochimica Acta · 1963 · 2.8K citations

Natural Sciences, Chemical Engineering, Chemistry +11

Microfossils of the Early Archean Apex Chert: New Evidence of the Antiquity of Life

J. William Schopf · Science · 1993 · 1.3K citations

Natural Sciences, Evolutionary Biology, Microbiology +16

2-Methylhopanoids as biomarkers for cyanobacterial oxygenic photosynthesis

Roger E. Summons, L. L. Jahnke, Janet M. Hope et al. · Nature · 1999 · 964 citations

Life Sciences, Biochemistry, Microbiology +12

Early Archean (3.3-Billion to 3.5-Billion-Year-Old) Microfossils from Warrawoona Group, Australia

J. William Schopf, Bonnie Packer · Science · 1987 · 644 citations

Natural Sciences, Geology, Microbiology +16