Earth:Tangbian Formation
| Tangbian Formation Stratigraphic range: Late Cretaceous, Campanian | |
|---|---|
| Type | Geological formation |
| Unit of | Guifeng Group |
| Underlies | Lianhe Formation |
| Overlies | Hekou Formation |
| Thickness | 240–3,060 m (790–10,040 ft) |
| Lithology | |
| Primary | purplish red sandstone, siltstone, and mudstone |
| Location | |
| Coordinates | [ ⚑ ] 26°9′N 116°4′E / 26.15°N 116.067°E |
| Region | Jiangxi Province |
| Country | China |
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The Tangbian Formation is a geological formation in Jiangxi Province, east China. While its absolute age is uncertain, it has been estimated to represent Late Cretaceous (Campanian age) sediments. Dinosaur bones and eggs are among the fossils recovered from the formation.
Geology and paleoenvironment
The Tangbian Formation is known from outcrops in the Xinjiang Basin of Jiangxi Province, southeastern China. It is part of the Late Cretaceous Guifeng Group, underlain by the Hekou Formation and overlain by the Lianhe Formation in that group. The formation is interpreted as Campanian in age, although absolute dates have not been obtained.[1][2] It comprises thick beds of fine-grained red-purple sandstone interbedded with mudstone, calcareous sandstone, and siltstone, and was deposited in an aeolian (wind-driven) setting representing a desert environment.[3][4][5]
Fossil content
The Tangbian Formation contains a rich record of dinosaur egg fossils and embryos. Most of the known egg clutches can be associated with oviraptorosaurs, although rarer egg fossils are known from hadrosaurs, troodontids, and possibly dromaeosaurids.[6][7]
Template:Paleobiota-key-compact
| Genus | Species | Region | Material | Notes | Images |
|---|---|---|---|---|---|
| Caninosaurus[8] | C. ganzhouensis | Incomplete skull and mandible | A polyglyphanodont lizard with caniniform upper teeth | ||
|
Huaxiazhoulong[2] |
H. shouwen |
Longxi Village, Guangchang County |
Partial well-preserved skeleton |
An ankylosaurid ankylosaur |
frameless |
|
Minioolithus[6] |
M. ganzhouensis |
Meilin Village, Ganxian District |
Clutch of six eggs |
Classified as belonging to the Ovaloolithidae, likely laid by a theropod dinosaur |
References
- ↑ Xi, Dangpeng; Wan, Xiaoqiao; Li, Guobiao; Li, Gang (2019). "Cretaceous integrative stratigraphy and timescale of China" (in en). Science China Earth Sciences 62 (1): 256–286. doi:10.1007/s11430-017-9262-y. ISSN 1674-7313. Bibcode: 2019ScChD..62..256X.
- ↑ 2.0 2.1 Zhu, Ziheng; Wu, Jie; You, Yue; Jia, Yingli; Chen, Chujiao; Yao, Xi; Zheng, Wenjie; Xu, Xing (2024-11-08). "A new ankylosaurid dinosaur from the Upper Cretaceous of Jiangxi Province, southern China" (in en). Historical Biology: 1–17. doi:10.1080/08912963.2024.2417208. ISSN 0891-2963.
- ↑ Jiang, Xinsheng; Pan, Zhongxi; Xu, Jinsha; Li, Xiaoyong; Xie, Guogang; Xiao, Zhijian (2008). "Late Cretaceous aeolian dunes and reconstruction of palaeo-wind belts of the Xinjiang Basin, Jiangxi Province, China" (in en). Palaeogeography, Palaeoclimatology, Palaeoecology 257 (1–2): 58–66. doi:10.1016/j.palaeo.2007.09.012. Bibcode: 2008PPP...257...58J.
- ↑ Zhang, Shouxin, ed. (2009), "Tangbian Formation (塘边组)" (in en), Geological Formation Names of China (1866–2000) (Berlin, Heidelberg: Springer): p. 1075, doi:10.1007/978-3-540-93824-8_7612, ISBN 978-3-540-93824-8
- ↑ Jiao, Haijing; Wu, Chihua; Rodríguez-López, Juan Pedro; Sun, Xiaoming; Yi, Haisheng (2020-10-01). "Late Cretaceous plateau deserts in the South China Block, and Quaternary analogues; sedimentology, dune reconstruction and wind-water interactions". Marine and Petroleum Geology 120. doi:10.1016/j.marpetgeo.2020.104504. ISSN 0264-8172.
- ↑ 6.0 6.1 Wu, Rui; Lou, Fasheng; Yu, Juan; Xue, Yu; Zhang, Shukang; Yang, Ling; Qiu, Wenjiang; Wang, Huimin et al. (2024-10-14). "The smallest known complete dinosaur fossil eggs from the Upper Cretaceous of South China". Historical Biology: 1–10. doi:10.1080/08912963.2024.2409873. ISSN 0891-2963.
- ↑ Yu, Cheng-Tao; Fan, Xiu-Jun (2022). "赣州盆地梅林—茅店恐龙蛋化石产地分布及赋存地层特征" (in zh). Journal of Hebei GEO University 45 (4): 6–12. http://cnki.kmlib.yn.cn/kcms/detail/detail.aspx?filename=HBDX202204002&dbcode=CJFQ&dbname=CJFD2022.
- ↑ Wang, Mengli; Dong, Liping; Yu, Juan; Lou, Fasheng; Qiu, Wenjiang; Han, Fenglu (19 Jun 2025). "A new borioteiioid lizard with large caniniform tooth from the Upper Cretaceous of South China". Journal of Systematic Palaeontology 23 (1). doi:10.1080/14772019.2025.2509637. ISSN 1477-2019.
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