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淅川盆地位于鄂、豫毗邻的淅川滔河、荆紫关一带,由滔河、荆紫关两凹陷与寺沟凸起组成,面积约420平方公里。1975年笔者根据获得少量恐龙蛋、轮藻等化石,将1600余米厚的一套“红层”,自上而下初步划分为:寺沟组、马家村组、高沟组,首次有依据地厘定区内晚白垩世地层的存在。1977年为详细研究豫南区的上白垩统,笔者再次对该盆地作系统调查,并在不同层位内,找到丰富而多属种的蛋化石。从而有充分依据进而肯定该区的晚白垩世沉积和上统的三分性。
Xichuan Basin is located in Hubei, Yu adjacent to the Xichuan River, Jing Zizhuan area, by the Tao River, Jing Zigzag two sags and temple ditch convex composition, an area of about 420 square kilometers. In 1975, according to a small amount of dinosaur eggs, charoplets and other fossils, a set of “red beds” of more than 1,600 meters in thickness was initially divided into upper and lower divisions: Shigou, Majiacun and Gaogou, for the first time According to the site to determine the existence of Late Cretaceous strata. In 1977 to study in detail the Upper Cretaceous in the southern area of Henan, the author made a systematic investigation of the basin again and found rich and more generous egg fossils in different layers. Thus there is sufficient evidence to further confirm the deposition of the Late Cretaceous and the upper trichotomous.