Luohandong Formation

The Luohandong Formation is an Early Cretaceous geologic formation of the Ordos Basin in Inner Mongolia, China. The formation was initially dated to the earliest Cretaceous; Valanginian to Barremian, but later dating established an Aptian to Albian age. Dinosaur remains are among the fossils that have been recovered from the formation.[1] Pterosaur fossils have also been recovered from the formation.

Luohandong Formation Stratigraphic range: Aptian-Albian ~120–110 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Type	Geological formation
Unit of	Zhidan Group
Lithology
Primary	Sandstone
Location
Coordinates	38.9°N 108.1°E / 38.9; 108.1
Approximate paleocoordinates	39.9°N 110.5°E / 39.9; 110.5
Region	Inner Mongolia
Country	China
Extent	Ordos Basin
Luohandong Formation (China)

Fossil content

late Early Cretaceous (105 Ma)

Vertebrates

• Ikechosaurus sunailinae
• Ordosipterus planignathus[2]
• Shantungosuchus hangjinensis
• Wuerhosaurus ordosensis[3]
• Ordosemys leios
• Sinemys gamera
• Eotomistoma sp.
• Psittacosaurus sp.
• Sinamia sp.
• Iguanodontidae indet.
• Mammalia indet.
• Neosuchia indet.
• Psittacosauridae indet.
• Pterosauria indet.
• Sauropoda indet.
• Stegosauria indet.

Insects

• Dataiphis coniferis
• Fuxiaeschna hsiufunia

See also

• List of dinosaur-bearing rock formations
• List of pterosaur-bearing stratigraphic units

References

1. Weishampel et al., 2004, pp.517-607
2. Ji, 2020
3. Hou & Ji, 2017

Bibliography

• Ji, Shu-an. 2020. First record of Early Cretaceous pterosaur from the Ordos Region, Inner Mongolia, China. China Geology 3. 1–7. doi:10.31035/cg2020007
• Hou, Y., and S. Ji. 2017. New findings of stegosaurs from the Lower Cretaceous Luohandong Formation in the Ordos Basin, Inner Mongolia. Geological Bulletin of China 36. 1097–1103.
• Weishampel, David B.; Peter Dodson, and Halszka Osmólska (eds.). 2004. The Dinosauria, 2nd edition, 1–880. Berkeley: University of California Press. Accessed 2019-02-21. ISBN 0-520-24209-2

Further reading

• Q. B. Lin. 1995. On Penaphis Lin, 1980 of Cretaceous (Callaphididae, Homoptera) and its coevolutionary relationships. Acta Palaeontologica Sinica 34:194-204
• Z.-M. Dong. 1994. The field activities of the Sino-Canadian Dinosaur Project in China, 1987–1990. Canadian Journal of Earth Sciences 30(10-11):1997-2001
• X.-C. Wu, D. B. Brinkman, and J.-C. Lu. 1994. A new species of Shantungosuchus from the Lower Cretaceous of Inner Mongolia (China), with comments on S. chuhsienensis Young, 1961 and the phylogenetic position of the genus. Journal of Vertebrate Paleontology 14(2):210-229