利用ＮｄＹＡＧ 激光ＡｒＡｒ 测年法，对产自辽西北票四合屯尖山沟地区义县组底部孔子鸟和中华鸟龙湖相层中火山凝灰岩中的黑云母单晶做了５０ 多次分析， 得出的同位素年龄值为（１４７ ±１．８） Ｍａ ， 用ＫＡｒ 法测得孔子鸟化石外面的火山包裹层的结果为（１４７．３ ±３ ．３）Ｍａ ，两者年龄时代相当吻合，同为晚侏罗世晚期（ 晚提唐期） ，比德国始祖鸟层的时代略晚，也与孔子鸟特征和美颌龙类———中华鸟龙指示的地质时代吻合。 By using NdYAG laser ArAr dating method, more than 50 biotite single crystals in volcanic tuffs from the bottom of Yixian Formation in the Sihetun  Jianshagou area, West Liaoning Province, and Longhu phase of Zhonghua bird The analysis shows that the isotopic age value is (147 ± 1.8) Ma, and the result of KAr method is (147.3 ± 3.3) Ma and The ages are quite consistent with the later Late Jurassic (late Tang period), slightly later than the age of the German Archeopteryx and also coincided with the geocentric age of the Confucius bird and the American jade dragon, the Chinese bird dragon.