Xinlong Formation Explained

Xinlong Formation
Type:	Geological formation
Age:	?Aptian-Albian ~
Period:	Albian
Prilithology:	Sandstone, mudstone
Otherlithology:	Conglomerate, marl
Region:	Guangxi
Coordinates:	22.6°N 107.9°W
Paleocoordinates:	23.2°N 116.1°W

The Xinlong Formation (sometimes called the "Napai Formation", or misspelt as "Napan Formation"^[1]) is an Early Cretaceous geologic formation in Guangxi, southern China.^[2]

Dinosaur remains diagnostic to the genus level are among the fossils that have been recovered from the formation.^[3]

Vertebrate paleofauna

Dinosaurs

Dinosaurs of the Xinlong Formation
Genus	Species	Location	Stratigraphic position	Material	Notes	Images
Asiatosaurus^[4]	A. kwangshiensis			Teeth, three cervical vertebrae and ribs	Indeterminate sauropod
Datanglong^[5]	D. guangxiensis			Last dorsal (back) vertebra (according to the descriptors the fourteenth), continues over the five sacral vertebrae, and ends with the second tail vertebra. The sacrum is attached to a left ilium with the upper parts of the left pubic bone and the left ischium, and one piece of the right ilium	A member of Carcharodontosauria
Fusuisaurus^[6]	F. zhaoi			Partial pelvis and caudal vertebrae	A titanosauriform
Liubangosaurus^[7]	L. hei			Fifth to ninth dorsal vertebrae	An eusauropod
Napaisaurus^[8]	N. guangxiensis			Right ilium and ischium	An iguanodontian
Prodeinodon^[9]	P. kwangshiensis			Several teeth, fragmentary tibia, fragmentary fibula	Indeterminate theropod
Psittacosauridae?	Indeterminate				Several different taxa of possible Psittacosaurid classification.
Siamosaurus^[10]	Indeterminate, possibly S. fusuiensis			Four teeth	Spinosaurid originally known as "Sinopliosaurus" fusuiensis^[11]

See also

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

References

Bibliography

• Book: Weishampel . David B. . David B. Weishampel . Dodson . Peter . Peter Dodson . Osmólska . Halszka . Halszka Osmólska . 2004 . The Dinosauria . 2nd . Berkeley: University of California Press . 2019-02-21 . 0-520-24209-2.

Notes and References

1. 2015-07-02. Early Cretaceous vertebrates from the Xinlong Formation of Guangxi (southern China): a review. Geological Magazine. en. 153. 1. 143–159. 10.1017/S0016756815000394. 0016-7568. Mo. Jinyou. Buffetaut. Eric. Tong. Haiyan. Amiot. Romain. Cavin. Lionel. Cuny. Gilles. Suteethorn. Varavudh. Suteethorn. Suravech. Jiang. Shan. 130076340.
2. http://www.fossilworks.org/cgi-bin/bridge.pl?action=displayStrata&geological_group=&formation=Xinlong&group_formation_member=Xinlong Xinlong Formation
3. Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
4. Hou. L.H.. Yeh. H.K.. Zhao. X.J.. 1975. Fossil reptiles from Fusui, Kwangshi. Vertebrata PalAsiatica. 13. 1. 24–33.
5. A new Carcharodontosauria (Theropoda) from the Early Cretaceous of Guangxi, Southern China. Acta Geologica Sinica (English Edition). 2014. 88. 4. 1051–1059. 10.1111/1755-6724.12272. Mo. Jinyou. Zhou. Fusheng. Li. Guangning. Huang. Zhen. Cao. Chenyun. 129386301 . free. 2014AcGlS..88.1051M .
6. A Basal Titanosauriform from the Early Cretaceous of Guangxi, China. Acta Geologica Sinica (English Edition). 2010. 80. 4. 486–489. 10.1111/j.1755-6724.2006.tb00267.x. Jinyou. MO. Wei. Wang. Zhitao. Huang. Xin. Huang. Xing. XU. 129846744 .
7. Mo Jinyou, Xu Xing and Eric Buffetaut . 2010 . A New Eusauropod Dinosaur from the Lower Cretaceous of Guangxi Province, Southern China . 10.1111/j.1755-6724.2010.00331.x . Acta Geologica Sinica (English Edition) . 84 . 6 . 1328–1335. 2010AcGlS..84.1328M . 140687733 .
8. Ji S, Zhang P . First new genus and new species of basal iguanodontian dinosaur (Ornithischia: Ornithopoda) from southern China . 2021 . Acta Geoscientica Sinica .
9. Book: Lower and Middle Cretaceous Terrestrial Ecosystems: Bulletin 14. New Mexico Museum of Natural History and Science. 1998. 2022-08-26. 6 . Spencer G. Lucas . James I. Kirkland . John W. Estep.
10. Buffetaut. Eric. Suteethorn. Varavudh. Tong. Haiyan. Amiot. Romain. 2008-09-01. An Early Cretaceous spinosaurid from southern China. Geological Magazine. 145. 5. 745–748. 10.1017/S0016756808005360. 2008GeoM..145..745B. 129921019.
11. Hou, L., Yeh, H. and Zhao, X. (1975). Fossil reptiles from Fusui, Kwangshi. Vertebrata PalAsiatica 13; 24-33