| 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 |
Hauterivian |
Barremian |
China(Heilungkiang) |
Li,W.-B. Early Cretaceous spore-pollen assemblages from eastern Heilongjiang |
1992 |
| original |
Middle Jurassic |
|
China(Tsinghai) |
Ouyang,S. et al. Diversity of spore morphology and its bearing on identification of fossil species |
1983 |