一、前言“建德系”的时代,长期被认为是属于早白垩世,但论据并不是很充分。近年来,特别是于其标准发育地点——浙西寿昌地区发现Terganoconcha和Corbicula(Mesocorbicula),Probaicalia,有人将其置于中、晚侏罗世之后,浙江有无早白垩世地层,还是一个有待研究的问题。本文根据区测工作所获得的资料,将永康盆地内的地层予以报导,希望对解决 I. Foreword The era of “the establishment of the Germanic system” has long been regarded as belonging to the Early Cretaceous, but the arguments are not very adequate. In recent years, Terganoconcha and Corbicula (Mesocorbicula) and Probaicalia have been discovered in Shouchang area, western Zhejiang, especially in the area of ​​its standard development. Some people found it in the Middle and Late Jurassic, and in the absence of the Early Cretaceous strata in Zhejiang or one Questions to be researched. Based on the data obtained from the regional survey, this article will report the strata in Yongkang basin and hope to solve this problem