| details |
Early Triassic |
|
China(Yunnan) |
Song,Z.-C. et al. Fossil Spores and Pollen of China. Volume 2: The Mezozoic Spores and Pollen. |
2000 |
| details |
Barremian |
|
China(Hopei) |
Smith,J.B. et al. Biostratigraphy and avian origins in northeastern China. (In: New Perspectives on the Origin and Early Evolution of Birds: Proceedings of the International Symposium in Honor of John H. Ostrom. J. Gauthier and L. F. Gall, editors) |
2001 |
| details |
Barremian |
|
China(Liaoning) |
Smith,J.B. et al. Biostratigraphy and avian origins in northeastern China. (In: New Perspectives on the Origin and Early Evolution of Birds: Proceedings of the International Symposium in Honor of John H. Ostrom. J. Gauthier and L. F. Gall, editors) |
2001 |
| details |
Late Cenomanian |
|
Canada(Yukon) |
Long, D.G.F., et al. Age and setting of dinosaur trackways, Ross River area, Yukon Territory (105F/15). |
2001 |