云南罗平中三叠统一海龙类新材料

程龙; 陈孝红; 张保民; 汪啸风

doi:10.3799/dqkx.2010.065

Volume 35 Issue 4

Jul. 2010

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Article Navigation > Earth Science > 2010 > 35(4): 507-511

CHENG Long, CHEN Xiao-hong, ZHANG Bao-min, WANG Xiao-feng, 2010. A New Material of Thalattosauria (Reptilia: Diapsida) from the Middle Triassic of Luoping, Yunnan Province. Earth Science, 35(4): 507-511. doi: 10.3799/dqkx.2010.065

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CHENG Long, CHEN Xiao-hong, ZHANG Bao-min, WANG Xiao-feng, 2010. A New Material of Thalattosauria (Reptilia: Diapsida) from the Middle Triassic of Luoping, Yunnan Province. Earth Science, 35(4): 507-511. doi: 10.3799/dqkx.2010.065

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A New Material of Thalattosauria (Reptilia: Diapsida) from the Middle Triassic of Luoping, Yunnan Province

doi: 10.3799/dqkx.2010.065

1.
Wuhan Institute of Geology and Mineral Resources, Wuhan 430223, China
2.
Key Laboratory of Biogeology and Environmental Geology of Ministry of Education, China Uiniversity of Geosciences, Wuhan 430074, China

Received Date: 2009-05-16
Available Online: 2021-11-10
Publish Date: 2010-07-01

Abstract

Abstract

A thalattosaur forelimb specimen described here, was collected from the second member of Guanling Formation (the Middle Triassic Anisian Pelsonian) of Xinzai village, Luoping County, Yunnan Province. It is not only the first appearance of Thalattosauria from Luoping Biota, but also the oldest record of long-necked taxon (Askeptosauridea). The incomplete skeleton of zeugopodium and autopodium is featured with the following special characters such as paralleled distolateral margins, expanded distal end of ulna, 11 ossified carpal elements, a transverse process in the proximal end of the third metacarpal and the phalangeal formula 2-3-4-4-4 (?). These characters are not enough to define a new taxon in Thalattosauria, but they show that some thalattosaur taxa preserved some primitive characters when they were divergent to water. Furthermore, these primitive characters indicate that some thalattosaur taxa could have lived on seashore.
- Thalattosauria,
- Triassic,
- stratigraphy,
- Yunnan Province

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References(39)

References

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A New Material of Thalattosauria (Reptilia: Diapsida) from the Middle Triassic of Luoping, Yunnan Province

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