(en) Jingeng Sha, « Cretaceous Stratigraphy of northeast China: non-marine and marine correlation », Cretaceous Research, vol. 28, no 2, , p. 146–170 (DOI10.1016/j.cretres.2006.12.002)
(en) S. C. Chang, H. Zhang, P. R. Renne et Y. Fang, « High-precision 40Ar/39Ar age for the Jehol Biota », Palaeogeography, Palaeoclimatology, Palaeoecology, vol. 280, no 1, , p. 94–104 (DOI10.1016/j.palaeo.2009.06.021)
(en) P. Chen, Q. Wang, H. Zhang, M. Cao, W. Li, S. Wu et Y. Shen, « Jianshangou Bed of the Yixian Formation in west Liaoning, China », Science in China Series D - Earth Sciences, vol. 48, , p. 298–312 (DOI10.1360/04yd0038)
(en) M. Wang, X. Zheng, J. K. o’Connor, G. T. Lloyd, X. Wang, Y. Wang, X. Zhang et Z. Zhou, « The oldest record of ornithuromorpha from the early cretaceous of China », Nature Communications, vol. 6, , p. 6987 (PMID25942493, DOI10.1038/ncomms7987)
(en) H.Y. He, X.L. Wang, Z.H. Zhou, F. Wang, A. Boven, G.H. Shi et R.X. Zhu, « Timing of the Jiufotang Formation (Jehol Group) in Liaoning, northeastern China, and its implications », Geophysical Research Letters, vol. 31, no 13, , p. 1709 (DOI10.1029/2004GL019790, Bibcode2004GeoRL..3112605H)
doi.org
(en) Su-Chin Chang, Ke-Qin Gao, Chang-Fu Zhou & Fred Jourdan (2017). New chronostratigraphic constraints on the Yixian Formation with implications for the Jehol Biota. Palaeogeography, Palaeoclimatology, Palaeoecology (advance online publication); doi: https://doi.org/10.1016/j.palaeo.2017.09.026
(en) H.Y. He, X.L. Wang, Z.H. Zhou, F. Wang, A. Boven, G.H. Shi et R.X. Zhu, « Timing of the Jiufotang Formation (Jehol Group) in Liaoning, northeastern China, and its implications », Geophysical Research Letters, vol. 31, no 13, , p. 1709 (DOI10.1029/2004GL019790, Bibcode2004GeoRL..3112605H)
(en) M. Wang, X. Zheng, J. K. o’Connor, G. T. Lloyd, X. Wang, Y. Wang, X. Zhang et Z. Zhou, « The oldest record of ornithuromorpha from the early cretaceous of China », Nature Communications, vol. 6, , p. 6987 (PMID25942493, DOI10.1038/ncomms7987)