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封面故事：豫南南阳盆地上白垩统剖面及“路易贝贝”胚胎化石。位于河南南阳西峡县阳城镇赵营村的上白垩统高沟组, 含有较多恐龙蛋化石, 其中包括著名的“路易贝贝”恐龙骨骼胚胎化石。通过对含化石地层的古气候重建和恐龙蛋保存特征的研究, 认为该时期的古气候经历了较为快速的暖干—暖湿—干旱—暖湿—干旱的旋回演化, 总体呈干旱趋势。这一古环境演变可能导致大量恐龙蛋不能完全孵化, 干旱造成的植被恶化可能是促使恐龙逐渐消亡的主要因素。这项由河南省地质博物馆贾松海研究团队取得的相关成果, 详见本期431-442页。(图片提供：贾松海)
Cover Story：The Upper Cretaceous strata and “Babe Louis” embryo bone fossils in Nanyang Basin of southern Henan Province. Quite a few dinosaur egg fossils, including a famous "Babe Louis" dinosaur embryo bone fossil, have been preserved in the Upper Cretaceous Gaogou Formation in Zhaoying Village of Yangcheng Town, Xixia County in Nanyang Basin, Henan Province. The research on the dinosaur egg embedding and the reconstruction of Late Cretaceous paleoclimate show that the pa-leoclimate changed quickly as a warm/dry –warm/wet – dry – warm/wet – dry process, and had a drying tendency. This type of pa-leoenvironment made lots of dinosaur eggs hatch incompletely, and the main factor causing gradual extinction of dinosaur was the vegetation deteriora-tion under the dry condition. The research achieve-ment led by Professor JIA Song-hai, Henan Geological Museum. For details, see pp. 431-442 of this issue. (Photo by JIA Song-hai)
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