..., including the eponymous species, Yorkella aff. australis , Eoredlichia sp., Redlichia sp., and the new species Wutingaspis euryoptilos and Yunnanocephalus macromelos . Trilobites of the Pararaia bunyerooensis Zone show a strong affinity with those from the Yu'anshan Member of the Heilinpu Formation...

...Fig. 3. Soft-bodied and lightly sclerotized fossils from new localities. Scale bar is 1 cm in ( a ) & ( c ), and 3 mm in the others. ( a ) Pipiscid-like animal Xidazoon stephanus Shu, Conway Morris & Zhang 1999 ( Shu et al . 1999 a ) from the Yu’anshan Member, Qiongzhusi Formation...

...Fig. 1. Cambroraster sp. nov. A (YKLP 11420) from the Yu’anshan Member of the Chiungchussu Formation (Chengjiang biota), Cambrian Stage 3 ( Eoredlichia–Wutingaspis Zone), Ercaicun Village, Haikou town, Kunming, Yunnan, South China. Images (a) and (c) are photographs of the specimen dry taken...

... we document new material of Lyrarapax , describing a new species from Chengjiang that allows the taxonomic status of various characters to be appraised. The stratum that bears Chengjiang fossils is the Yu’anshan Member (Cambrian unnamed stage 3), which together with the underlying Shiyantou...

...Fig. 1. Cambroraster sp. nov. A (YKLP 11420) from the Yu’anshan Member of the Chiungchussu Formation (Chengjiang biota), Cambrian Stage 3 ( Eoredlichia–Wutingaspis Zone), Ercaicun Village, Haikou town, Kunming, Yunnan, South China. Images (a) and (c) are photographs of the specimen dry taken...

... was collected from several localities of the Chengjiang Lagerstätte ( Hou et al., 2004a ), the mudstone-dominated Yu'anshan Member of the Helinpu Formation (previously Qiongzhusi Formation, old spelling style: Chiungchussu), Eoredlichia trilobite Zone, late Atdabanian, in Yunnan Province, China...

... into the overlying basal Yu'anshan Member. The Ediacaran–Cambrian boundary was initially placed at Marker A at the base of the ‘Xiaowaitoushan Member’ in which the FAD of small shelly fossils had been claimed (Luo et al . 1980 , 1982 ) but was subsequently placed at Marker B (that is, at the boundary between...

... sclerites. Here we describe Micrina xiaotanensis new species and Tannuolina zhangwentangi Qian and Bengtson, 1989 from the Lower Cambrian Shiyantou and Yu'anshan formations (upper Meishucunian to Qiongzhusian stages) at Xiaotan, eastern Yunnan, South China. The new material not only extends the geographic...

... et al. (2016 b ) , and radiometric ages are from Compston et al. (2008) , Zhu et al. (2009) and Yang et al. (2017 a ) . Ashes beds are marked by red lines. The early Cambrian Chengjiang biota occurs in the Maotianshan Shale Member of the Yu'anshan Formation in eastern Yunnan...

... ). The Meishucun section is capped by Middle Devonian rocks and contains the Zhujiaqing, Shiyantou, and Yu’anshan Formations, which are subdivided into individual beds ( Fig. 2 ). At present, most workers place the Precambrian-Cambrian boundary in the Kunming region at the base of the Zhongyicun Member...

...Figure 2 Haifengella corona n. gen. n. sp. from the lower Cambrian (Series 2, Stage 3) Maotianshan Shale Member, middle part of the Yu'anshan Formation ( Eoredlichia–Wudingaspis Zone) in the Mafang section, Haikou near Kunming, Yunnan Province; 1 , 4–6 , NIGPAS158639; 2 , NIGPAS158640: 1...

...Figure 1. Geologic settings of fossil site and composition of fossil assemblage from Chengjiang background mudstone beds (BGB): (A) fossil locality and (B) stratigraphy of Yu’anshan Formation, Haikou, Kunming, China; (C) background beds intercalated with event beds of Maotianshan Shale Member...

... body fossils are well documented from the Middle Cambrian Burgess Shale ( Rigby, 1986 ; Rigby and Collins, 2004 ); they also have been reported from the Early Cambrian Yu'anshan Formation in eastern Yunnan (Chengjiang-type fauna; Chen et al., 1989 , 1990 ; Rigby and Hou, 1995 ), from the Niutitang...

... – Wutingaspis Zone, Yu'anshan Member, Heilinpu Formation, Lower Cambrian, Chengjiang County, Yunnan, China. Eoredlichia – Wutingaspis Zone, Yu'anshan Member, Heilinpu Formation, Lower Cambrian, Jinning County and Haikou of Kunming, Yunnan, China. Carapace length up to about 35 mm; telson...