[Analysis of Ostrea gigas Thunberg from Xinhua, Jiangsu]

This paper compares the ultramicrostructure, infrared spectrum and Meigen reaction of the ancient Ostrea gigas shell from Xinhua County, Jiangsu Province, with those of fresh Ostrea gigas shell from Fujian Province. It was shown that the histomorphology of the ancient Ostrea gigas shell is the same as that of the fresh one and both shells are composed of calcite.