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Recalibrating the First Eukaryotes

Source info:

Author: Michael J. Ryan, Ph.D.
Date: 2015-06-04 14:22:00
Blog: Palaeoblog
URL: http://palaeoblog.blogspot.com/2015/06/recalibrating-first-eukaryotes.html

Summary:

Reappraisal of hydrocarbon biomarkers in Archean rocks. 2015. PNAS Contaminated samples have evidently created some confusion in the timetable of life. On the basis of ultra-clean analyses, an international team, including scientists from the Max Planck Institute for Biogeochemistry, has disproved supposed evidence that eukaryotes originated 2.5 to 2.8 billion years ago. In contrast to

Content analysis:

Stratigraphic context:

Recognized stratigraphic terms [n]:Archean [1]
Agenames chronostratigraphy [rating]:Archean [0.1]
Precambrian [0.1]

Keywords:

Archean rocks, basis, Biogeochemistry, confusion, contrast, Eukaryotes Reappraisal, evidence, hydrocarbon biomarkers, international team, life, Max Planck Institute, PNAS, samples, timetable, ultra-clean analyses

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