浙江义乌县乌灶村附近有一个小煤田,劳动人民从很早以前就已开采。1932年燕春台认为从植物化石看是侏罗纪煤系,但未进一步划分,也未予命名。同年稍后,李陶等创立乌灶煤系一名,列举有Dictyophyllum植物化石。后来即用以代表浙江各地陆续发现的早、中侏罗世煤系地层。 There is a small coal field near Wuzao Village, Yiwu County, Zhejiang Province, where working people have been mined long ago. In 1932, Yan Chuangtai considered the Jurassic coal measure from the plant fossils, but did not further divide it nor was it named. Later in the same year, Li Tao and others founded a coal-fired coalition, listing Dictyophyllum plant fossils. Later on, it was used to represent the early and middle Jurassic coal strata that were discovered in different parts of Zhejiang Province.