远古发现|“老化石”里发现“新秘密”：新成果破解多项生命演化之谜

Core Insights - Recent studies by the Chinese Academy of Sciences have revealed new findings about human evolution and early mammal evolution through the analysis of ancient fossils using advanced technologies [1][2][3][6] Group 1: Human Evolution - The research on the Yuncheng Man skull, dated to approximately 1 million years ago, has redefined the human evolutionary timeline, indicating that multiple human groups had already diverged by that time [2] - The study found that the Yuncheng Man is not a representative of Homo erectus but rather an early representative of the Dragon Man lineage, suggesting earlier divergence of Homo sapiens, Dragon Man, and Neanderthals than previously recorded [2] - The findings challenge existing fossil records and provide a new evolutionary tree for the genus Homo, indicating a more complex evolutionary history [2] Group 2: Early Mammal Evolution - Research on the Chuan-nan Multicuspid Beast fossil, dating back 160 to 168 million years, has uncovered a unique jaw joint structure that indicates a significant evolutionary transition from reptiles to mammals [3][5] - The study suggests that the jaw joint of the Chuan-nan Multicuspid Beast allowed for greater chewing efficiency, marking a key difference between reptiles and mammals [3][5] - Another fossil, the Lufeng Quian Beast, dating back 201 to 184 million years, provides insights into the transitional forms of jaw joint evolution, filling gaps in the understanding of vertebrate evolution [5] Group 3: Technological Innovations - Advanced technologies such as high-precision CT scanning and 3D reconstruction have been employed to analyze and reconstruct ancient fossils, allowing researchers to gain new insights from previously studied specimens [6] - The application of these technologies has revitalized the study of ancient fossils, enabling a deeper understanding of evolutionary history [6] - The ongoing research aims to uncover more "sleeping" fossils, further enhancing knowledge of life's history [6]