Abstract: Based on the latest U-series dating of flow stone calcite in Nanjing Man Cave ( Little Cave) with TIMS, the age of Nanjing Man may be older than 500 000 years. The analysis of mammalian, spore and pollen fossils indicate that the deposit containing hominid fossils was formed in the cold ( glacial) stage. By the cluster analysis of mammalian fossils in Little Cave and in Peking Man Cave, the layer containing Nanjing Man fossils is correlated with the 6th breccia layer in the Peking M an Cave and the Stages 14 of marine deposits δ18 O. This result approved the new dating by TIMS which suggests that the age of Nanjing Man is earlier than 500 000 years ago with more evidence.

Key words: Nanjing Man, Cave deposits, U-series dating with TIMS, Glaciation