Kaoshangtun, Shangyuan, Beipiao (DNHM): Valanginian - Hauterivian, China

List of taxa
Where & when
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia - Avetheropoda - Troodontidae
1 specimen
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
see common names

Country:China State/province:Liaoning County:Beipiao
Coordinates: 41.6° North, 120.9° East (view map)
Paleocoordinates:43.3° North, 123.3° East
Basis of coordinate:based on political unit
Geographic resolution:outcrop
Period:Cretaceous Epoch:Early/Lower Cretaceous
Key time interval:Valanginian - Hauterivian
Age range of interval:139.80000 - 129.40000 m.y. ago
Geological group:Jehol Formation:Yixian Member:Lujiatun
Stratigraphic resolution:group of beds
Stratigraphy comments: 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
Lithology and environment
Primary lithology:fine,volcaniclastic,green sandy mudstone
Includes fossils?Y
Lithology description: The specimen (DNHM D2154) is encased in green mudstone with up to fine sand-size clasts
Environment:fluvial indet. Tectonic setting:volcanic basin
Geology comments: lowest more fluvial and volcaniclastic
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Collection methods and comments
Collection excludes:some macrofossils
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Collection method comments: DNHM, Dalian Natural History Museum, Dalian, China
Database number:133789
Authorizer:R. Benson Enterer:R. Benson
Modifier:R. Benson Research group:vertebrate
Created:2012-09-28 23:37:51 Last modified:2012-09-28 08:38:59
Access level:the public Released:2012-09-28 23:37:51
Creative Commons license:CC BY
Reference information

Primary reference:

43150. 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]