Jiaoyuan tracksite, Gulin (Jurassic to of China)

Where: Sichuan, China (24.0° N, 105.8° E: paleocoordinates 26.6° N, 113.1° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Da'anzhai Member (Ziliujing Formation), Toarcian to Toarcian (182.7 - 168.3 Ma)

• The Ziliujing is divided into (in ascending order) Zhenzhuchong, Dongyuemiao, Ma’anshan, and Da’anzhai members. A Toarcian age for the Dongyuemiao Member and an early Middle Jurassic age for the overlying parts of the formation is supported on the basis of macroplants (e.g. Meng et al. 2003. Acta Palaeontologica Sinica 42: 525-536)

•- At least 8 track-bearing levels

• group of beds-level stratigraphic resolution

Environment/lithology: lacustrine; poorly lithified siltstone and lithified sandstone

• "lacustrine freshwater with fluctuating water levels and occasional drying up along the margin"
• "friable siltstones with a few resistant sandstones"

Size class: macrofossils

Preservation: cast, mold/impression, trace

Collected by Y.-G. Chen, J.-M. Tang, L.-D. Xing in 2009–2014

Collection methods: surface (in situ),

Primary reference: L.-d. Xing. 2010. [Report on dinosaur trackways from Lower Jurassic Ziliujing Formation of Gulin area, Sichuan, China]. Geological Bulletin of China 29(11):1730-1732 [M. Carrano/M. Oreska/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 103971: authorized by Matthew Carrano, entered by Matthew Oreska on 04.02.2011, edited by Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Saurischia -
Liujianpus shunan n. gen. n. sp.1
Liujianpus shunan n. gen. n. sp.1 Xing et al. 2016 sauropodomorph
9 trackways, some in parallel
 Theropoda - Grallatoridae
cf. Grallator sp.2 Hitchcock 1858 theropod
"Jiaoyuan type B" tracks; trackways JYT3, 4
Eubrontes sp.2 Hitchcock 1845 theropod
"Jiaoyuan type A" tracks; trackways JYT1, 2