江西恐龙蛋的分类及层位

CLASSIFICATION AND STRATIGRAPHIC POSITION OF DINOSAURIAN EGGS IN JIANGXI

恐龙蛋是晚白垩世地层中一类特殊而又珍贵的化石。江西晚白垩世地层分布广泛，发育良好，散见于大小不一、形态各异的近３０个盆地中。其中多个盆地发现恐龙蛋，某些盆地不仅数量丰富，且类型多种多样。本文根据其形态特征，以前人分类定名为依据，将江西境内所产恐龙蛋分别归于长形蛋科、圆形蛋科和大圆蛋科，并对其分布、产出层位等作了介绍。

Dinosaurian egg is a kind of peculiar and precious fossil in the Late Cretaceous strata, which are well-developed and widely distributed in nearly 30 basins of varied sizes and shapes in Jiangxi. Many of these basins produce dinosaurian eggs, and some produce dinosaurian eggs not only large in quantity but also rich in variety. With reference to the previous classification and based on geometrical features, this paper has classified the dinosaurian eggs produced in Jiangxi into Elongatoolithus, Spheroidoolithus and Gigantospheroidoolithus, and a description has been made on their distribution and stratigraphic positions.