Geological formation in China
The Gaogou Formation is a fossiliferous geological formation located in the Xixia Basin of China . The formation dates back to the Late Cretaceous (Cenomanian -Coniacian ) and fossilized eggs of dinosaurs and turtles are commonly reported from the formation. Dinosaur taxa is also reported from the unit.
Paleobiota of the Gaogou Formation [ edit ] Color key Notes Uncertain or tentative taxa are in small text ; crossed out taxa are discredited.
Dinosaurs [ edit ] Genus Species Location Stratigraphic Position Material Notes Images Araucariaceae indet. Indeterminate Xixia "Amber pieces."[6] A conifer . Plantae indet. Indeterminate Not specified. Upper Member "Rhizoliths."[7] Root traces.
Invertebrates [ edit ] Genus Species Location Stratigraphic Position Material Notes Images Beaconites B. antarcticus Not specified. Upper Member "Horizontal-overtical, straight to slightly curved, single, lined, meniscate burrows."[7] Invertebrate traces. B. capronus Not specified. Upper Member "Horizontal to vertical, straight to slightly curved, lined, unbranched burrows."[7] Invertebrate traces. B. coronus Not specified. Upper Member "Mostly horizontal to vertical, meniscate burrows."[7] Invertebrate traces. Gastruichnus G. xixiaensis Not specified. Upper Member "Large, high dipping, slightly curved and unbranched burrow."[7] Traces made by molluscs . Palaeophycus P. heberti Not specified. Upper Member "Straight to curved, horizontal to vertical, unbranched and lined burrows."[7] Invertebrate traces. P. megas Not specified. Upper Member "Curved, horizontal to vertical, unbranched and lined burrows."[7] Invertebrate traces. Skolithos S. linearis Not specified. "Cylindrical burrows."[7] Invertebrate traces. S. magnus Not specified. "Cylindrical to subcylindrical, vertical and slightly curved burrows."[7] Invertebrate traces.
Turtles [ edit ] Genus Species Location Stratigraphic Position Material Notes Images Yuchelys Y. nanyangensis Neixiang "Partial skeleton with carapace."[8] A nanhsiungchelyid .
See also [ edit ] References [ edit ] ^ Zhang, X.; Lü, J.; Xu, L.; Li, J.; Yang, L.; Hu, W.; Jia, S.; Ji, Q.; Zhang, C. (2009). "A New Sauropod Dinosaur from the Late Cretaceous Gaogou Formation of Nanyang, Henan Province". Acta Geologica Sinica (English Edition) . 83 (2): 212. doi :10.1111/j.1755-6724.2009.00032.x . S2CID 129422997 . ^ a b Pu, H.; Zelenitsky, D. K.; Lü, J.; Currie, P. J.; Carpenter, K.; Xu, L.; Koppelhus, E. B.; Jia, S.; Xiao, L.; Chuang, H.; Li, T.; Kundrát, M.; Shen, C. (2017). "Perinate and eggs of a giant caenagnathid dinosaur from the Late Cretaceous of central China" . Nature Communications . 8 (14952): 14952. doi :10.1038/ncomms14952 . PMC 5477524 . PMID 28486442 . ^ a b c d e f g h Liang, X.; Wen, S.; Yang, D.; Zhou, S.; Wu, S. (2009). "Dinosaur eggs and dinosaur egg-bearing deposits (Upper Cretaceous) of Henan Province, China: Occurrences, palaeoenvironments, taphonomy and preservation" . Progress in Natural Science . 19 (11): 1587−1601. doi :10.1016/j.pnsc.2009.06.012 . ^ Xu, L.; Xie, J.; Zhang, S.; Choi, S.; Kim, N.-H.; Gao, D.; Jin, X.; Jia, S.; Gao, Y. (2022). "Fossil turtle eggs from the Upper Cretaceous Gaogou Formation, Xiaguan-Gaoqiu Basin, Neixiang County, Henan Province, China: Interpretation of the transformation from aragonite to calcite in fossil turtle eggshell". Cretaceous Research . 134 : 105166. doi :10.1016/j.cretres.2022.105166 . S2CID 246627436 . ^ Zhang, S.; Yang, T.-R.; Li, Z.; Hu, Y. (2018). "New dinosaur egg material from Yunxian, Hubei Province, China resolves the classification of dendroolithid eggs" (PDF) . Acta Palaeontologica Polonica . 63 (4): 671−678. doi :10.4202/app.00523.2018 . ^ Shi, G.; Dutta, S.; Paul, S.; Wang, B.; Jacques, F. M. B. (2014). "Terpenoid Compositions and Botanical Origins of Late Cretaceous and Miocene Amber from China" . PLOS ONE . 9 (10): e111303. doi :10.1371/journal.pone.0111303 . PMC 4213060 . PMID 25354364 . ^ a b c d e f g h i Wang, C.-Z.; Wang, J.; Hu, B.; Lu, X.-H. (2016). "Trace fossils and sedimentary environments of the upper cretaceous in the Xixia Basin, Southwestern Henan Province, China". Geodinamica Acta . 28 (1–2): 53−70. doi :10.1080/09853111.2015.1065307 . ^ Tong, H.; Xu, L.; Buffetaut, E.; Zhang, X.; Jia, S. (2012). "A new nanhsiungchelyid turtle from the Late Cretaceous of Neixiang, Henan Province, China". Annales de Paléontologie . 98 (4): 303–314. doi :10.1016/j.annpal.2012.08.001 .