From Wikipedia, the free encyclopedia
The Hekou Formation is a Cretaceous geologic
formation in
China .
Pterosaur fossils have been recovered from the formation. It is a unit of the
Guifeng Group and dates to the Late Cretaceous (
Coniacian -early
Campanian ).
[1] Dinosaur fossils from the formation include a nearly perfect
oviraptorid embryo nicknamed
Baby Yingliang , an unnamed large
hadrosaurid , and hadrosauroid eggs with embryos.
[2]
[3]
[4] Mammal fossils include
Erythrobaatar and
Yubaatar qianzhouensis .
[5]
[6] The
polyglyphanodontian lizard
Yechilacerta has also been described from the formation.
[7]
^ Xi, D.; Wan, X.; Li, G.; Li, G. (2018). "Cretaceous integrative stratigraphy and timescale of China". Science China Earth Sciences . 61 : 1–31.
doi :
10.1007/s11430-017-9262-y .
S2CID
135150710 .
^ Xing, Lida; Niu, Kecheng; Ma, Waisum; Zelenitsky, Darla K.; Yang, Tzu-Ruei; Brusatte, Stephen L. (2022).
"An exquisitely preserved in-ovo theropod dinosaur embryo sheds light on avian-like prehatching postures" . iScience . 25 (1): 103516.
Bibcode :
2022iSci...25j3516X .
doi :
10.1016/j.isci.2021.103516 .
PMC
8786642 .
PMID
35106456 .
^ Xing, Lida; Niu, Kecheng; Wang, Donghao; Marquez, Albert Prieto (2020-06-18).
"A partial articulated hadrosaurid skeleton from the Maastrichtian (Upper Cretaceous) of the Ganzhou area, Jiangxi Province, China" . Historical Biology . 33 (10): 2256–2259.
doi :
10.1080/08912963.2020.1782397 .
ISSN
0891-2963 .
S2CID
225764043 .
^ Xing L, Niu K, Yang TR, Wang D, Miyashita T, Mallon JC (2022).
"Hadrosauroid eggs and embryos from the Upper Cretaceous (Maastrichtian) of Jiangxi Province, China" . BMC Ecology and Evolution . 22 (1): Article number 60.
doi :
10.1186/s12862-022-02012-x .
PMC
9088101 .
PMID
35534805 .
^ Jin, X.; Mao, F.; Du, T.; Yang, Y.; Meng, J. (2022). "A new multituberculate from the latest Cretaceous of central China and its implications for multituberculate tooth homologies and occlusion". Journal of Mammalian Evolution . 30 : 1–20.
doi :
10.1007/s10914-022-09636-2 .
S2CID
253192551 .
^ Hu, J.; Han, F. (2021).
"A new multituberculate, Yubaatar qianzhouensis sp. nov.: the first Late Cretaceous mammal from Ganzhou Basin, Jiangxi Province" . Acta Palaeontologica Sinica . 60 (4): 565–579.
doi :
10.19800/j.cnki.aps.2020057 .
^ Xing, Lida; Niu, Kecheng; Evans, Susan E. (2023).
"A new polyglyphanodontian lizard with a complete lower temporal bar from the Upper Cretaceous of southern China" . Journal of Systematic Palaeontology . 21 (1).
Bibcode :
2023JSPal..2181494X .
doi :
10.1080/14772019.2023.2281494 .
ISSN
1477-2019 .