Also known as Beipiao city
Where: Liaoning, China (41.6° N, 120.9° E: paleocoordinates 44.3° N, 122.7° E)
• coordinate based on nearby landmark
• small collection-level geographic resolution
When: Yixian Formation (Jehol Group), Late/Upper Barremian to Late/Upper Barremian (130.0 - 122.5 Ma)
• "Yixian Formation, Early Cretaceous (~125 Ma)"
•JA: age estimate based on age of other Sihetun sites
•level within formation not specified
• bed-level stratigraphic resolution
Environment/lithology: lacustrine; lithified siliciclastic sediments
•
•As a result, tuffs are commonly interbedded with the shales or mudstones of these formations, and even the normal lake sedimentation contains tuffaceous components (Figure 1). The Yixian Formation mainly comprises basalts with interbedded siliciclastic sediments, and can be divided into several beds (Zhongue, 2006).
Size class: macrofossils
Preservation: adpression, soft parts
Collection methods: Dalian Natural Museum collection
Primary reference: Z. Zhang, C. Gao, Q. Meng, J. Liu, L. Hou and G. Zheng. 2009. Diversification in an Early Cretaceous avian genus: evidence from a new species of Confuciusornis from China. Journal of Ornithology 150(4):783-790 [J. Alroy/J. Alroy]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 92626: authorized by John Alroy, entered by John Alroy on 18.11.2009
Creative Commons license: CC BY (attribution)
Taxonomic list
| Aves | |
"Confuciusornis feducciai n. sp." = Confuciusornis sanctus
"Confuciusornis feducciai n. sp." = Confuciusornis sanctus Hou et al. 1995 bird | |