Also known as Jianchang

Where: Liaoning, China (40.6° N, 119.4° E: paleocoordinates 41.9° N, 122.6° E)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Tiaojishan Formation, Late/Upper Bathonian to Late/Upper Bathonian (167.7 - 150.8 Ma)

• Not clear if specimens come from one or multiple beds.

•

•"The Tiaojishan Formation is generally regarded as Middle (Zhang & Zheng 1991; Liu et al. 2006; Cheng & Li 2007) to Upper Jurassic (Chang et al. 2009) (Late Bathonian-Early Kimmeridgian) in age, although it may date to the early Middle Jurassic (Aalenian) in Jianchang County (Davis et al. 2001). The unit has been dated using radiometric techniques at 169-152 Mya by Liu et al. (2006) and 165-156 Mya by Zhang et al. (2008)." (Lü et al. 2010, Proc Roy Soc B 277, 383-389: supplement)

• formation-level stratigraphic resolution

Environment/lithology: lacustrine; brown siliciclastic sediments

Size class: macrofossils

Preservation: adpression, soft parts

Collection methods: quarrying, mechanical,

• YFGP: Yizhou Fossil & Geology Park. Fossils bought from private dealers

Primary reference: X. Xu, Q. Zhao, M. Norell, C. Sullivan, D. Hone, G. Erickson, X. Wang, F. Han, and Y. Guo. 2009. A new feathered maniraptoran dinosaur fossil that fills a morphological gap in avian origin. Chinese Science Bulletin 54(3):430-435 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 106306: authorized by Matthew Carrano, entered by Matthew Carrano on 07.03.2011, edited by Richard Butler and Philip Mannion

Creative Commons license: CC BY (attribution)