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利用电感耦合等离子体发射光谱仪(ICP-AES),对采自河南西峡晚白垩世的十三枚恐龙蛋化石壳及蛋内充填物和部分围岩进行了测试。发现Sr元素具有明显的超高异常。恐龙蛋化石壳中的Sr的含量分布在1962×10-6～11010×10-6之间,平均5532×10-6,比古代和现代富Sr的腕足类外壳高一到数倍,比地壳丰度值高一个数量级还多。这种超高异常可能与恐龙蛋壳中含有一定数量的文石有关。而由于文石稳定性较差,在石化过程中会逐渐向低镁方解石转化,所以现在已无法再见到蛋壳中的文石,但Sr却保留了下来。反映了中生代时陆生爬行动物的蛋壳与海相生物硬壳一样具有文石和方解石共存的局面。
Thirteen dinosaur egg fossils, eggshell infill and some of the surrounding rock collected from Late Cretaceous, Xixia, Henan Province were tested by inductively coupled plasma atomic emission spectrometry (ICP-AES). The Sr element was found to have a significant ultrahigh anomaly. The content of Sr in the dinosaur egg fossil shell ranges from 1962 × 10-6 to 11010 × 10-6 with an average of 5532 × 10-6 which is one to several times higher than that of the ancient and modern Sr-rich brachiopods, Abundance is an order of magnitude higher. This abnormally high anomaly may be related to the dinosaur eggshell containing a certain amount of aragonite. However, due to the poor stability of aragonite, it will gradually transform into low-magnesium calcite during the petrochemical process, so it is no longer possible to see the aragonite in the egg shell, but Sr is retained. Reflecting the coexistence of aragonite and calcite in the egg shell of terrestrial reptiles at the Mesozoic, similar to the marine shell.