Land mammal faunal sequence of the late Miocene of China: New evidence from Lantian, Shaanxi Province
Land mammal faunal sequence of the late Miocene of China: New evidence from Lantian, Shaanxi Province
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发表时间：
2002
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通讯作者：
Zhaoqun Zhang;A. Gentry;A. Kaakinen;L. Liping;J. Lunkka;Z. Qiu;S. Sen;R. Scott;L. Werdelin-
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作者：
Zhaoqun Zhang;A. Gentry;A. Kaakinen;L. Liping;J. Lunkka;Z. Qiu;S. Sen;R. Scott;L. Werdelin-
新发现的化石分类群和对巴河组和蓝田组旧标本的初步修正，使我们能够重新解释中国晚中新世的哺乳动物区系序列。地层中化石类群的分布表明，晚中新世发生了一次大的更替事件，这一时期略早于以巴河组和蓝田组界线为代表的沉积学变化（约7Ma）。这一变化后的哺乳动物区系与华北经典的保丁哺乳动物区系有较强的相似性。根据这一更替事件，有可能在晚中新世的宝安陆生哺乳动物时代之前，重新出现宝安陆生哺乳动物时代。Bahean/Baodean翻转事件具有生态和分类双重特征，表明该时期气候发生了显著变化，可能是由东亚夏季风环流系统的开始或增强所驱动的。
Newly discovered fossil taxa and preliminary revision of the old collection from the Bahe and Lantian formations allow a re interpretation of the mammalian faunal sequence of the Chinese Late Miocene. The distribution of fossil taxa in the strata shows a major turnover event within the late Miocene, at a time slightly preceding the sedimentological change represented by the boundary between the Bahe and Lantian Formations (ca. 7Ma). The mammal fauna postdating the change shows a strong resemblance to the classic Baodean mammal faunas of North China. Based on this turnover event a resurrection of the Bahean Land Mammal Age, predating the Baodean LMA within the late Miocene, would be possible. The Bahean/Baodean turnover event was ecological as well as taxonomic and suggests significant climatic change at this time, possibly driven by onset or intensification of the East Asian summer monsoon circulation system.