牙形刺,牙形石;
The Permian faunas are very abundant, with a great of fossils, mostly collected from the mudstone and limestone. They consist of 421 species and 183 genera, mainly including Fusulinids, Brachiopoda, Bivalves, Cephalopoda, Conodont and so on.
二叠纪动物群繁盛,大量的动物化石大多采自泥岩和灰岩,计有138属421种,主要包括(?)、腕足、双壳类、头足类和牙形刺等。
MEI Shi-long , 1991 . Middle and Late Cambrian conodont and trilobite biostratigraphy in Wanxian, Hebei . Unpublished Ph. D thesis of Peking University.
武桂春, 2003. 鲁西地区晚寒武世牙形石. 北京大学博士研究生学位论文.
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