Hongshiyanaspis yiliangensis Zhang & Lin 1980 (lateral with antennae and legs well preserved) Suborder Redlichiina, Superfamily Redlichioidea, Family Metadoxididae Lower Cambrian, Maotianshan Shales, “Xiazhuang fossil assemblage” late Qiongzhusian age (Stage 3, Cambrian) lower Hongjingshao Formation, Xiazhuang village of Chenggong, Kunming, Yunnan Province, China The associated trilobites demonstrate that the soft-bodied fossil assemblage belongs to the late Qiongzhusian in age (Stage 3, Cambrian), suggesting that the Hongjingshao Formation is probably a diachronous lithostratigraphic unit ranging from the upper Qiongzhusian to the lower Canglangpuan stages in eastern Yunnan. The fossil assemblage from the Xiazhuang area fills up the missing link between the typical older Chengjiang biota and the younger Malong and Guanshan biotas, making eastern Yunnan a unique area in the world to reveal the early evolutionary history of animals and palaeocommunity dynamics during the ‘‘Cambrian explosion’’. ZENG Han, ZHAO Fangchen*, YIN Zongjun, LI Guoxiang, ZHU Maoyan. 2014. A Chengjiang-type fossil assemblage from the Hongjingshao Formation (Cambrian Stage 3) at Chenggong, Kunming, Yunnan. Chinese Science Bulletin, DOI:10.1007/s11434-014-0419-y.
Posted on: Wed, 03 Sep 2014 16:20:41 +0000
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