These bird fossils have great significance for both the study of the climatic and eco-environmental change at the Ashan site and the avian geographic distribution, mi gra tion and evolution.
这些鸟类化石对研究遗址的生态环境、气候变化以及鸟类地理分布、迁徙和演化等都有重要意义。
These bird fossils have great significance for both the study of the climatic and eco-environmental change at the Ashan site and the avian geographic distribution, mi gra tion and evolution.
这些鸟类化石对研究遗址的生态环境、气候变化以及鸟类地理分布、迁徙和演化等都有重要意义。
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