Abstract:

In the past,the Chejiang formation of the Hengyang Basin in Hunan pro-vince was usually assigned to the Paleocene.According to recent study of plentiful fossils such as charophytes,ostracods,spores and pollen,pelecy-pods and eggs of dinosaurs collected from this formation in Hengyang Countyand its vicinity,a late Late Cretaceous age may ascribed to it instead.