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在浙东沿海大片中生代火山岩覆盖区的永嘉县枫林镇附近、地层时代原定为上侏罗统茶湾组（J3c）或下白垩统馆头组（K1g）的一套沉积地层中，首次发现较为丰富的、曾产于中国某些地区新元古界和俄罗斯陆台与西伯利亚陆台上里菲及文德系中的微古植物化石。据此．该地层时代应属于新元古代。从而为研究浙东沿海基底构造提供了重要而可靠的窗口。
Near the Fenglin Town, Yongjia County, covering the vast Mesozoic volcanic rocks along the eastern Zhejiang coast, the stratigraphic age was originally defined as a set of sedimentary formations of the Upper Jurassic Chawan Formation (J3c) or Lower Cretaceous Tarim Formation (K1g) The more abundant microfossils were found in the Neoproterozoic in some parts of China and in the Phillip and Wende lines on the continental platforms of Russia and Taiwan. Accordingly. The strata period should belong to Neoproterozoic. Thus providing an important and reliable window for the study of the basement structure of the eastern Zhejiang coast.