From Wikipedia, the free encyclopedia
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.
Color key
Notes Uncertain or tentative taxa are in small text ; crossed out taxa are discredited.
Dinosaurs
Eggs
Flora
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
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
Genus
Species
Location
Stratigraphic Position
Material
Notes
Images
Yuchelys
Y. nanyangensis
Neixiang
"Partial skeleton with carapace."[ 8]
A nanhsiungchelyid .
See also
References
^ 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 .
^ 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). 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 . doi :10.1016/j.cretres.2022.105166 .
^ 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 .