AGE OF THE VALUABLE FOSSILIFEROUS BEDS OF THE SIHETUN VILLAGE——NEW EVIDENCE OF Ar/Ar and SHRIMP U/Pb DATING
AGE OF THE VALUABLE FOSSILIFEROUS BEDS OF THE SIHETUN VILLAGE——NEW EVIDENCE OF Ar/Ar and SHRIMP U/Pb DATING
四合屯珍稀化石层的时代———Ar/Ar和SHRIMPU/Pb年龄新证据