The middle Miocene Hamjin flora and preliminary palaeoclimatic analysis of the Democratic People's Republic of Korea.

The Hamjin flora was discovered from the Miocene Hamjin Formation of Hamjin-ri, Myonggan County, North Hamgyong Province. Taxodiaceae , Fagaceae , Betulaceae and Aceraceae are dominated and there are also plant fossils that are extinct in our country, such as dozens of extant species, and Liriodendron , Cercidiphyllum , Saysfras, Nyssa and so on. The Hamjin flora show that the climate at that time was warm and temperate. The plant fossils found in Hamjin area are of great importance for studying the evolution of flora and climate change from the Middle Miocene to the present. • The Hamjin flora was discovered from the middle Miocene Hamjin Formation, DPRK. • Taxodiaceae, Fagaceae, Betulaceae and Aceraceae are dominated in this flora. • There are also many extant species, and Liriodendron, Cercidiphyllum, Saysfras, Nyssa etc. [ABSTRACT FROM AUTHOR]