Evidence of Archean life: Stromatolites and microfossils Schopf, J. William ; Kudryavtsev, Anatoliy B. ; Czaja, Andrew D. ; Tripathi, Abhishek B. Abstract Publication: Precambrian Research Pub Date: October 2007 DOI: 10.1016/j.precamres.2007.04.009 Bibcode: 2007PreR..158..141S