Zhiluo Formation

Zhiluo Formation
Zhiluo Formation
Stratigraphic range: Middle to Late Jurassic, Bathonian–Oxfordian PreꞒ Ꞓ O S D C P T J K Pg N
Type	Geological formation
Sub-units	Lower, Upper units
Underlies	Lower Cretaceous Dongsheng Formation
Overlies	Yanan Formation
Thickness	100-200 metres
Lithology
Primary	Sandstone, siltstone mudstone
Location
Region	Shaanxi
Country	China
Extent	Ordos Basin

The Zhiluo Formation is a geological formation in China, it is also alternatively considered a geological group under the name Zhiluo Group (formerly known as the Chiloo Group). It dates to the Middle Jurassic. It consists of sandstone, mudstone and siltstone of varying colours. It has received scientific attention for its uranium ore bodies present in the lower part of the formation.^[1] Fossil theropod tracks have been reported from the formation.^[2] These were described from two footprints found in Jiaoping Coal Mine by C. C. Young in 1966 as Shensipus tungchuanensis. These were in 2015 suggested to belong to Anomoepus.^[3] The dicraeosaurid sauropod dinosaur Lingwulong is known from the formation, previously having been erroneously attributed to the underlying Yanan Formation.^[4]

Fossil content

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

Sauropods

Sauropods of the Zhiluo Formation
Genus	Species	Location	Stratigraphic position	Material	Notes	Images
Lingwulong^[5]	L. shenqi				A dicraeosaurid sauropod

Insects

Insects of the Zhiluo Formation
Genus	Species	Location	Stratigraphic position	Material	Notes	Images
Orthophlebia	O. quadrimacula				A orthophlebiid scorpionfly

Footnotes

^ Jin, Ruo-shi; Feng, Xiao-xi; Teng, Xue-ming; Nie, Feng-jun; Cao, Hai-yang; Hou, Hui-qun; Liu, Hong-xu; Miao, Pei-sen; Zhao, Hua-lei; Chen, Lu-lu; Zhu, Qiang (2020). "Genesis of green sandstone/mudstone from Middle Jurassic Zhiluo Formation in the Dongsheng Uranium Orefield, Ordos Basin and its enlightenment for uranium mineralization". China Geology. 3 (1): 52–66. doi:10.31035/cg2020002. ISSN 2096-5192.
^ Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
^ Xing, Lida; Lockley, Martin G.; Tang, Yonggang; Klein, Hendrik; Zhang, Jianping; Persons, W. Scott; Dai, Hui; Ye, Yong (2015-01-02). "Theropod and Ornithischian Footprints from the Middle Jurassic Yanan Formation of Zizhou County, Shaanxi, China". Ichnos. 22 (1): 1–11. doi:10.1080/10420940.2014.985670. ISSN 1042-0940. S2CID 129509962.
^ Dai, Hui; Tan, Chao; Xiong, Can; Ma, Qingyu; Li, Ning; Yu, Haidong; Wei, Zhaoying; Wang, Ping; Yi, Jian; Wei, Guangbiao; You, Hailu; Ren, Xinxin (2022). "New macronarian from the Middle Jurassic of Chongqing, China: phylogenetic and biogeographic implications for neosauropod dinosaur evolution". Royal Society Open Science. 9 (11): 220794. doi:10.1098/rsos.220794. PMC 9627447. PMID 36340515.
^ Xing Xu; Paul Upchurch; Philip D. Mannion; Paul M. Barrett; Omar R. Regalado-Fernandez; Jinyou Mo; Jinfu Ma; Hongan Liu (2018). "A new Middle Jurassic diplodocoid suggests an earlier dispersal and diversification of sauropod dinosaurs". Nature Communications. 9 (1): Article number 2700. Bibcode:2018NatCo...9.2700X. doi:10.1038/s41467-018-05128-1. PMC 6057878. PMID 30042444.

References

Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp. ISBN 0-520-24209-2.

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[1] Jin, Ruo-shi; Feng, Xiao-xi; Teng, Xue-ming; Nie, Feng-jun; Cao, Hai-yang; Hou, Hui-qun; Liu, Hong-xu; Miao, Pei-sen; Zhao, Hua-lei; Chen, Lu-lu; Zhu, Qiang (2020). "Genesis of green sandstone/mudstone from Middle Jurassic Zhiluo Formation in the Dongsheng Uranium Orefield, Ordos Basin and its enlightenment for uranium mineralization". China Geology. 3 (1): 52–66. doi:10.31035/cg2020002. ISSN 2096-5192.

[dinosaurdistribution-2] Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.

[3] Xing, Lida; Lockley, Martin G.; Tang, Yonggang; Klein, Hendrik; Zhang, Jianping; Persons, W. Scott; Dai, Hui; Ye, Yong (2015-01-02). "Theropod and Ornithischian Footprints from the Middle Jurassic Yanan Formation of Zizhou County, Shaanxi, China". Ichnos. 22 (1): 1–11. doi:10.1080/10420940.2014.985670. ISSN 1042-0940. S2CID 129509962.

[4] Dai, Hui; Tan, Chao; Xiong, Can; Ma, Qingyu; Li, Ning; Yu, Haidong; Wei, Zhaoying; Wang, Ping; Yi, Jian; Wei, Guangbiao; You, Hailu; Ren, Xinxin (2022). "New macronarian from the Middle Jurassic of Chongqing, China: phylogenetic and biogeographic implications for neosauropod dinosaur evolution". Royal Society Open Science. 9 (11): 220794. doi:10.1098/rsos.220794. PMC 9627447. PMID 36340515.

[5] Xing Xu; Paul Upchurch; Philip D. Mannion; Paul M. Barrett; Omar R. Regalado-Fernandez; Jinyou Mo; Jinfu Ma; Hongan Liu (2018). "A new Middle Jurassic diplodocoid suggests an earlier dispersal and diversification of sauropod dinosaurs". Nature Communications. 9 (1): Article number 2700. Bibcode:2018NatCo...9.2700X. doi:10.1038/s41467-018-05128-1. PMC 6057878. PMID 30042444.

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