Carbonaceous load-cast fossils found in black shale in the middle part of the late Late Sinian Li-uchapo Formation at Ligonggang,Taoyuan,western Hunan,provide a rare Burgess-Shale-type tapho-nomic window for late terminal Precambrian biology.

• 湘西桃源理公港震旦系留茶坡组中部黑色页岩中的炭质压膜化石,为研究末前寒武纪晚期生物学提供了一个稀有的布吉斯页岩型分类学窗口。