Also known as Haplocheirus type locality

Where: Xinjiang, China (45.2° N, 88.9° E: paleocoordinates 46.8° N, 91.3° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Middle Member (Shishugou Formation), Oxfordian (163.5 - 157.3 Ma)

• Upper part of the Shishugou Formation, Wucaiwan, Xinjiang, People’s Republic of China. Extensive 40Ar/39Ar dating of feldspars from intercalated tuffaceous layers of volcanic tuffs at Wucaiwan constrains the age of the specimen to between 158.7 ± 0.3 and 161.2 ± 0.2 Ma, approximately at the Oxfordian/Callovian boundary (Gradstein et al., 2004; Clark et al., 2006b). Because the holotype is from the upper part of the sediments between these dated tuffs, we consider the age of Zuolong to be Oxfordian.

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; mudstone

Size class: macrofossils

Collected by Sino-American Expedition; reposited in the IVPP

Collection methods: quarrying, mechanical,

Primary reference: N. R. Longrich, P. J. Currie, and Z.-M. Dong. 2010. A new oviraptorid (Dinosauria: Theropoda) from the Upper Cretaceous of Bayan Mandahu, Inner Mongolia. Palaeontology 53(5):945-960 [M. Carrano/M. Carrano/R. Benson]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 137835: authorized by Roger Benson, entered by Roger Benson on 21.12.2012

Creative Commons license: CC BY (attribution)