Nanzhang-Yuan'an Fauna, Hubei Province and Its Significance for Biotic Recovery
The upper part of the third Member of the Lower Triassic Jialingjiang Formation in western Hubei Province is a 30 m-thick laminated limestone,which contains many kinds of marine reptile fossils including such as Hupehsuchia,Ichthyosauria and Sauropterygia and others from Yingzishan and Yangping of Yuan' an county and Xunjian and Gujin of Nanzhang county in western Hubei Province.These marine reptiles form an excellent Nanzhang-Yuan'an fauna characterized by occurrence of abundant Hupehsuchia,which coexists with Ichthyosauria and Sauropterygia.The fact that the diversities of the order or genus and species of the marine reptiles are close to that of the Panxian-Luoping fauna present after biotic recovery in the Middle Triassic indicates that the first radiation of marine reptiles occurred during the late Early Triassic period and a new ocean ecosystem with reptiles as top animal in food chain was rebuilt.
Nanzhang-Yuan'an faunabiotic recoveryMarine reptileLower TriassicHubei Province
国家科技期刊平台
NSTL
万方数据
维普
