Majiacun Formation

The Majiacun Formation is a Santonian to Coniacian geologic formation in China.[1] Dinosaur remains are among the fossils that have been recovered from the formation.

Majiacun Formation Stratigraphic range: late Coniacian-late Santonian ~86–85 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Location
Type	Geological formation
Sub-units	Unit 2
Underlies	Sigou Formation
Overlies	Gaogou Formation
Lithology
Primary	Mudstone, siltstone
Other	Sandstone, conglomerate
Location
Coordinates	33.2°N 111.8°E / 33.2; 111.8
Approximate paleocoordinates	33.2°N 104.3°E / 33.2; 104.3
Region	Henan, Hubei
Country	China
Extent	Xixia Basin
Majiacun Formation (China) Show map of China Majiacun Formation (Henan) Show map of Henan

Paleofauna

• Bakesaurus
• Mosaiceratops azumai[2]
• Xixiasaurus henanensis[3]
• Xixianykus zhangi[4]
• Yunxianosaurus hubeinensis
• Zhanghenglong yangchengensis[5]
• Baryonchinae indet.[6]

Fossil eggs

• Dendroolithus sanlimiaoensis[7]
• Prismatoolithus gebiensis[8]
• Ovaloolithus sp.[9]
• Spheroolithus sp.[7][9]
• Nanyangosaurus zhugeii[9]
• Youngoolithus xiaguanensis[9]

Ichnofossils

• Scoyenia sp.[7]

See also

• List of dinosaur-bearing rock formations
  • List of stratigraphic units with few dinosaur genera

References

1. Majiacun Formation at Fossilworks.org
2. Zheng et al., 2015
3. Lü et al., 2010
4. Xu et al., 2010
5. Xing et al., 2014
6. Hone et al., 2010
7. Zhou & Feng, 2002
8. Liang et al., 2009
9. Zhao, 1979

Bibliography

• Tan, Q.-W.; H. Xing; Y.-G. Hu; L. Tan, and X. Xing. 2015. New hadrosauroid material from the Upper Cretaceous Majiacun Formation of Hubei Province, central China. Vertebrata PalAsiatica 53. 245–264.
• Zheng, W.; X. Jin, and X. Xu. 2015. A psittacosaurid-like basal neoceratopsian from the Upper Cretaceous of central China and its implications for basal ceratopsian evolution. Scientific Reports 5. 14190:1–9.
• Xu, H.; D. Wang; F. Han; C. Sullivan; Q. Ma; Y. He; D. W. E. Hone; R. Yan, and F. Du. 2014. A New Basal Hadrosauroid Dinosaur (Dinosauria: Ornithopoda) with Transitional Features from the Late Cretaceous of Henan Province, China. PLoS ONE 9. e98821. PMC 4047018 doi:10.1371/journal.pone.0098821 PMID 24901454
• Hone, .; . Xu, and . Wang. 2010. A probable baryonychine (Theropoda: Spinosauridae) tooth from the Upper Cretaceous of Henan Province, China. Vertebrata PalAsiatica 48. 19–26.
• Lü, J.; L. Xu; Y. Liu; X. Zhang; S. Jia, and Q. Ji. 2010. A new troodontid theropod from the Late Cretaceous of central China, and the radiation of Asian troodontids. Acta Palaeontologica Polonica 55. 381–388.
• Xu, X.; D.-Y. Wang; C. Sullivan; D. W. E. Hone; F.-L. Han; R.-H. Yan, and F.-M. Du. 2010. A basal parvicursorine (Theropoda: Alvarezsauridae) from the Upper Cretaceous of China. Zootaxa 2413. 1–19.
• Liang, X.; S. Wen; D. Yang; S. Zhou, and S. Wu. 2009. Dinosaur eggs and dinosaur egg-bearing deposits (Upper Cretaceous) of Henan Province, China: Occurrences, palaeoenvironments, taphonomy and preservation. Progress in Natural Science 19. 1587–1601.
• Zhou, S.-q., and Z.-j. Feng. 2002. Studies on the occurrence beds of Oölithus and their relations to the upper-lower boundaries in Henan province. Resources Survey & Environment 23. 68–76.
• Zhao, Z. 1979. Discovery of the dinosaurian eggs and footprint from Neixiang county, Henan province. Vertebrata PalAsiatica 17. 304–309.