Late Archean molecular fossils from the Transvaal Supergroup record the antiquity of microbial diversity and aerobiosis Waldbauer, Jacob R. ; Sherman, Laura S. ; Sumner, Dawn Y. ; Summons, Roger E. Abstract Publication: Precambrian Research Pub Date: March 2009 DOI: 10.1016/j.precamres.2008.10.011 Bibcode: 2009PreR..169...28W