現時点における日本の非海生白亜紀二枚貝化石研究の総括

抄録

In addition to many works on this problem which have been done for about forty years, recent studies in Japan, Korea and SE Asia were introduced. These results were sum marized from the view points of taxonomy, age correlation and environment. The faunas are divisible into three (Neocomian, Up. Neocomian Low. Albian and Up. Albian-Turoni-an) and brief explanations on them were given.