| Abstract: |
English summary on page 32 as follows: Neogene stratigraphy of Vietnam is divided into Miocene (Lower, Middle, Upper), Pliocene and Pliocene - Pleistocene. In the process of Neogene, nine chronoecological assemblages of flora, some palynological assemblages, three diatom assemblages, some remains of Coleopteran insects and rare fossils of Mammalia are discovered. All the above-mentioned fossils show three large climatic changes in Miocene (humid or dry subtropical), Pliocene (temperate subtropical) and Late Pliocene - Early Pleistocene (humid or subtropical). The similarity between the Hang Mon of Dong Giao, Yen Bai, Tuyen Quang, na Duong, Khe Bo of ecostragraphic significance represents an important basis for the study of Pre-pleistocene.
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