Bayin-Gobi Formation

The Bayin-Gobi Formation (simplified Chinese: 巴音戈壁组; traditional Chinese: 巴音戈壁組; pinyin: Bāyīn Gēbì Zǔ) (also known as Bayan Gobi, or Bayingebi Formation) is a geological formation in Inner Mongolia, north China, whose strata date back to Albian of the Early Cretaceous period. Dinosaur remains are among the fossils that have been recovered from the formation.

Bayin-Gobi Formation
Stratigraphic range: Albian PreꞒ Ꞓ O S D C P T J K Pg N
Type	Geological formation
Unit of	Yin-E Basin
Underlies	Suhongtu Formation
Overlies	Permian metamorphic basement
Thickness	100-2120 m
Lithology
Primary	Mudstone, Siltstone, Conglomerate
Other	Sandstone
Location
Region	Asia
Country	China
Extent	Inner Mongolia

Paleobiota of the Bayin-Gobi Formation

Color key Taxon Reclassified taxon Taxon falsely reported as present Dubious taxon or junior synonym Ichnotaxon Ootaxon Morphotaxon		Notes Uncertain or tentative taxa are in small text; crossed out taxa are discredited.

Dinosaurs

Genus	Species	Location	Stratigraphic Position	Material	Notes	Images
Alxasaurus	A. elesitaiensis	Elesitai Village		"Partial skeletons of several specimens."[1]	A therizinosauroid.
Bannykus	B. wulatensis	Chaoge		"Partial and articulated skeleton lacking skull."[2]	An alvarezsauroid.
Bayannurosaurus	B. perfectus	Chulumiao	Middle section of the Upper half of the Bayingebi Formation	"Nearly complete and semi-articulated skeleton."[3]	A large ankylopollexian.
Dromaeosauridae indet.	Indeterminate	Balongwula		"Partial hindlimbs, isolated manual ungual, and ribs."[4]	A dromaeosaurid, possibly a microraptorine.
Penelopognathus	P. weishampeli	Qiriga Village		"Isolated right dentary."[5]	A hadrosauroid.
Psittacosaurus	P. gobiensis	Suhongtu		"Skull and skeletons of multiple specimens."[6]	A ceratopsian.

See also

• Earth sciences portal
• Paleontology portal
• Dinosaurs portal

• List of dinosaur-bearing rock formations

References

1. Russell, D. A.; Dong, Z. (1993). "The affinities of a new theropod from the Alxa Desert, Inner Mongolia, People's Republic of China". Canadian Journal of Earth Sciences. 30 (10): 2107−2127. Bibcode:1993CaJES..30.2107R. doi:10.1139/e93-183.
2. Xu, Xing; Choiniere, Jonah; Tan, Qingwei; Benson, Roger B.J; Clark, James; Sullivan, Corwin; Zhao, Qi; Han, Fenglu; Ma, Qingyu; He, Yiming; Wang, Shuo; Xing, Hai; Tan, Lin (2018). "Two Early Cretaceous Fossils Document Transitional Stages in Alvarezsaurian Dinosaur Evolution". Current Biology. 28 (17): 2853–2860. doi:10.1016/j.cub.2018.07.057. PMID 30146153.
3. Xu, Xing; Tan, Qingwei; Gao, Yilong; Bao, Zhiqiang; Yin, Zhigang; Guo, Bin; Wang, Junyou; Tan, Lin; Zhang, Yuguang; Xing, Hai (2018). "A large-sized basal ankylopollexian from East Asia, shedding light on early biogeographic history of Iguanodontia". Science Bulletin. 63 (9): 556–563. Bibcode:2018SciBu..63..556X. doi:10.1016/j.scib.2018.03.016. PMID 36658842. S2CID 104031324.
4. Pittman, M.; Pei, R.; Tan, Q.; Xu, X. (2015). "The first dromaeosaurid (Dinosauria: Theropoda) from the Lower Cretaceous Bayan Gobi Formation of Nei Mongol, China". PeerJ. 3: e1480. doi:10.7717/peerj.1480. PMC 4675113. PMID 26664809.
5. Godefroit, P.; Li, H.; Shang, C.-Y. (2005). "A new primitive hadrosauroid dinosaur from the Early Cretaceous of Inner Mongolia (P.R. China)". Comptes Rendus Palevol. 4 (8): 697–705. Bibcode:2005CRPal...4..697G. doi:10.1016/j.crpv.2005.07.004.
6. Sereno, P. C.; Xijin, Z.; Lin, T. (2009). "A new psittacosaur from Inner Mongolia and the parrot-like structure and function of the psittacosaur skull". Proceedings of the Royal Society B. 277 (1679): 199–209. doi:10.1098/rspb.2009.0691. PMC 2842669. PMID 19535376.