Si Xingjian
[1][3] He was a researcher and director of the Institute of Paleontology, Chinese Academy of Sciences and held positions as a professor at Tsinghua University, Peking University[3] and the Nanjing institute of Geology and Paleontology.[3] Si's research focused on paleobotany,[1][3] and he made significant contributions to the classification and evolution of paleobotany, comparative stratigraphic divisions, and phytogeographic distribution.[3] Si also made a significant impact on the field of geology and paleobotany education.He was known for being dedicated to teaching and sharing his insights with students and colleagues.Due to Si's tireless efforts, the study of paleobotany and terrestrial stratigraphy in China was greatly advanced.