Wang, X.; Zhou, Z.; He, H.; Jin, F.; Wang, Y.; Wang, Y.; Zhang, J.; Xu, X.; Zhang, F.; et al. (2005). "Stratigraphy and age of the Daohugou Bed in Ningcheng, Inner Mongolia". Chinese Science Bulletin. 50 (20): 2369–2376. Bibcode:2005ChSBu..50.2369W. doi:10.1007/BF03183749. S2CID198142479.
Liu, Y.; Zhang, H. (2006). "LA-ICPMS zircon U-Pb dating in the Jurassic Daohugou Beds and correlative strata in Ningcheng of Inner Mongolia". Acta Geologica Sinica (English Edition). 80 (5): 733–742. doi:10.1111/j.1755-6724.2006.tb00296.x. S2CID129030035.
Chen, P.; Wang, Q.; Zhang, H.; Cao, M.; Li, W.; Wu, S.; Shen, Y. (2005). "Jianshangou Bed of the Yixian Formation in west Liaoning, China". Science China Earth Sciences. 48 (3): 298–312. Bibcode:2005ScChD..48..298C. doi:10.1360/04yd0038. S2CID130825449.
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Wang, X.; Zhou, Z.; He, H.; Jin, F.; Wang, Y.; Wang, Y.; Zhang, J.; Xu, X.; Zhang, F.; et al. (2005). "Stratigraphy and age of the Daohugou Bed in Ningcheng, Inner Mongolia". Chinese Science Bulletin. 50 (20): 2369–2376. Bibcode:2005ChSBu..50.2369W. doi:10.1007/BF03183749. S2CID198142479.
Chen, P.; Wang, Q.; Zhang, H.; Cao, M.; Li, W.; Wu, S.; Shen, Y. (2005). "Jianshangou Bed of the Yixian Formation in west Liaoning, China". Science China Earth Sciences. 48 (3): 298–312. Bibcode:2005ScChD..48..298C. doi:10.1360/04yd0038. S2CID130825449.
Wang, X.; Zhou, Z.; He, H.; Jin, F.; Wang, Y.; Wang, Y.; Zhang, J.; Xu, X.; Zhang, F.; et al. (2005). "Stratigraphy and age of the Daohugou Bed in Ningcheng, Inner Mongolia". Chinese Science Bulletin. 50 (20): 2369–2376. Bibcode:2005ChSBu..50.2369W. doi:10.1007/BF03183749. S2CID198142479.
Liu, Y.; Zhang, H. (2006). "LA-ICPMS zircon U-Pb dating in the Jurassic Daohugou Beds and correlative strata in Ningcheng of Inner Mongolia". Acta Geologica Sinica (English Edition). 80 (5): 733–742. doi:10.1111/j.1755-6724.2006.tb00296.x. S2CID129030035.
Chen, P.; Wang, Q.; Zhang, H.; Cao, M.; Li, W.; Wu, S.; Shen, Y. (2005). "Jianshangou Bed of the Yixian Formation in west Liaoning, China". Science China Earth Sciences. 48 (3): 298–312. Bibcode:2005ScChD..48..298C. doi:10.1360/04yd0038. S2CID130825449.