Maoershi, Jiangbei: Bathonian - Callovian, China
collected 1977

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia - Stegosauridae
Chungkingosaurus jiangbeiensis n. gen., n. sp. Dong et al. 1983
1 individual
CV 00206 (4 measurements)
see common names

Geography
Country:China State/province:Sichuan County:Jiangbei
Coordinates: 27.8° North, 105.3° East (view map)
Paleocoordinates:28.0° North, 110.5° East
Basis of coordinate:based on nearby landmark
Altitude:304 meters
Geographic resolution:small collection
Time
Period:Jurassic Epoch:Middle Jurassic
Key time interval:Bathonian - Callovian
Age range of interval:168.30000 - 163.50000 m.y. ago
Stratigraphy
Geological group:Chongqing Formation:Shaximiao Member:Upper
Stratigraphic resolution:bed
Stratigraphy comments: Several radiometric ages have been reported for the Shaximiao Formation, including 167 Ma or 172 Ma (Zong and Shi, 1997), 167–172 Ma or 178–169 Ma (Gou et al., 2000), 163±3 Ma (Li et al., 2010), 160±4 Ma (Luo et al., 2014), 158±7 Ma (Qian et al., 2016), and 159±2 Ma (Wang et al., 2018). However, more recent studies suggest an older age; Dai et al. 2022 reported a maximum depositional age for the bone-bearing layers of the lower member of the Shaximiao formation to be Bjaocan. Zhou et al. 2022 also supported a late Middle Jurassic age for the Shaximiao Formation (Bathonian-Callovian).
Lithology and environment
Primary lithology: not reported
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Associated major elements:all
Fragmentation:occasional
Temporal resolution:snapshot
Collection methods and comments
Collection methods:selective quarrying,mechanical,field collection
Reason for describing collection:taxonomic analysis
Collection dates:1977
Metadata
Also known as:Mai-eisni
Database number:60067
Authorizer:M. Carrano Enterer:M. Carrano
Modifier:G. Varnham Research group:vertebrate
Created:2006-04-28 11:34:56 Last modified:2022-05-06 03:28:10
Access level:the public Released:2006-04-28 11:34:56
Creative Commons license:CC BY
Reference information

Primary reference:

17258.ETE Z. Dong, S. Zhou, and H. Zhang. 1983. [Dinosaurs from the Jurassic of Sichuan]. Palaeontologica Sinica, New Series C, Whole Number 162(23):1-136 [M. Carrano/M. Carrano]

Secondary references:

78564 S. C. R. Maidment. 2010. Stegosauria: a historical review of the body fossil record and phylogenetic relationships. Swiss Journal of Geosciences 103(2):199-210 [M. Carrano/M. Carrano]
66470 R. E. Ulansky. 2015. Chungkingosaurus [Chungkingosaurus]. Dinologia 1-8 [M. Carrano/M. Carrano]