Department of Geosciences;
University of Tulsa;
and Precision Stratigraphy Associates;
Tulsa;
OK 74104;
USA;
State Key Laboratory of Biogeology and Environmental Geology;
China University of Geosciences. Beijing 100083. China;
Exploration and Development Research Institute of Daqing Oil.field Company Ltd.;
Daqing 163712. China;