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作者单位: | Department of Plant Sciences, University of the Free State, Bloemfontein 9301, South Africa; Bernard Price Institute for Palaeontology, University of the Witwatersrand, Johannesburg, South Africa; Forschungsstelle für Paläobotanik, University of Münster, Germany; Department of Geography, University of Georgia, Athens, GA 30602, United States; Department of Anthropology, Texas State University San Marcos, San Marcos, TX 78666, United States; GAES, University of the Witwatersrand, Johannesburg, South Africa; Department of Physical Geography and Quaternary Geology, Stockholm University, Stockholm, Sweden; Geology Department, Faculty of Science, Assiut University, Assiut 71516, Egypt
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