Kaoshangtun, Shangyuan, Beipiao (DNHM) (Cretaceous to of China)

Where: Liaoning, China (41.6° N, 120.9° E: paleocoordinates 43.3° N, 123.3° E)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Lujiatun Member (Yixian Formation), Valanginian to Valanginian (139.8 - 129.4 Ma)

• Lowest more fluvial and volcaniclastic beds of Yixian Formation, older than 128 and younger than 139 Ma

•In the lower Yixian Formation, a fossiliferous tuff layer, the Lujiatun beds, crops out near Beipiao City

• group of beds-level stratigraphic resolution

Environment/lithology: fluvial; fine-grained, volcaniclastic, green, sandy mudstone

• lowest more fluvial and volcaniclastic
• The specimen (DNHM D2154) is encased in green mudstone with up to fine sand-size clasts

Size classes: macrofossils, mesofossils

Collection methods: DNHM, Dalian Natural History Museum, Dalian, China

Primary reference: C. -L. Gao, E. M. Morschauser, D. J. Varricchio, J. Liu, and B. Zhao. 2012. A second soundly sleeping dragon: new anatomical details of the Chinese troodontid Mei long with implications for phylogeny and taphonomy. PLoS ONE 7(9):e45203:1-17 [R. Benson/R. Benson/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 133789: authorized by Roger Benson, entered by Roger Benson on 28.09.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

 Avetheropoda - Troodontidae
Mei long Xu and Norell 2004 coelurosaur
DNHM D2154, a nearly complete, articulated skeleton including skull, complete cervical series, partial dorsal series, complete sacrum and ilium, a partial pubis, complete hind limbs, fairly complete caudal series and complete forelimbs, except for the furculum and much of the left manus. The missing forelimb elements may still be present in the matrix, but are not currently exposed