Middle Eocene Small Mammals from Liguanqiao Basin of Henan Province and Yuanqu Basin of Shanxi Province, Central China

The Liguanqiao basin is about 600 km2. The small mammals are found in thin gray carbonaceous mudstones. The Yuanqu basin is a small intermountane sink in the Zhongtiao range, conrtaining Eocene sediments more than 1,000 m thick. Since 1986, more than thousand samples have been collected in the Middle Eocene of the Liguanqiao and Yuanqu basins, central China, representing 67 taxa of Insectivora, Chiroptera, primates, Lagomorpha, rodentia and proteutheria. An outline of micromammalian faunas in the later Eocene of China is included in this report.