... embryos, along with sponge spicules, hyolithelminths, and linguliformean brachiopods, from the upper Shuijingtuo Formation limestone (Cambrian Stage 3) at Changyang, Hubei Province, South China. This limestone unit has carbonate carbon and oxygen isotopic compositions similar to the upper Shuijingtuo...

...Tao Dai; Xingliang Zhang AbstractA number of immature and mature exoskeletons allow the first detailed description of the ontogeny of the early Cambrian redlichiid trilobite Metaredlichia cylindrica, from black shale of the Shuijingtuo Formation in Hubei Province, South China. The material...

... (Ding, Li & Chen, 1992 ). The U–Pb age from the base of the Shuijingtuo Formation in the Yangtze Gorges area gives an age of 526.4±5.4 Ma (Okada et al. 2014 ); thus the Yanjiahe Formation records the biogeochemical history of approximately the first 15 Ma of the Cambrian Period. Figure 1...

... that it is Early Cambrian. The top of the Dengying Formation is composed of varicoloured dolostones, containing small shelly fossils and generally accepted as Meishucunian in age. The overlying Shuijingtuo Formation is a sequence of black shales containing large carbonate concretions, approaching 2 m in diameter...

... the Shuijingtuo Formation in Zhenba, Shaanxi, South China (Hao and Shu, 1987 ), where they co-occur with Microdictyon (Zhang and Aldridge, 2007 ). In the Shuijingtuo Formation, the number of plates belonging to Quadratapora (63) and Fusuconcharium (28) is quite small in comparison...

.... , and Xiao , S. , 2008 , Morphological and chemical analyses of Sphenothallus from the Early Cambrian Shuijingtuo Formation, China : Geological Society of America Abstracts with Programs , 40 . 477 . Neal , M. , and Hannibal , J. , 2000 , Paleoecologic and taxonomic implications...

... limestones in the lower Cambrian Yu'anshan and Shuijingtuo Formations ( Zhang and Pratt, 2008 ). FIGURE 1. Geologic outline of the study area. A–B) Index maps. C) Geologic map. 1–6  =  major localities of Orsten limestones. D) Columnar section of the Furongian Alum Shale Formation in Trolmen...

... , Characteristics and origin of in-situ gas desorption of the Cambrian Shuijingtuo Formation shale gas reservoir in the Sichuan Basin, China : Fuel , 187 , 285 – 295 , doi: http://dx.doi.org/10.1016/j.fuel.2016.09.072 . FUELAC 0016-2361 Tang X. Jiang Z. Jiang S. Li Z. , 2016...

...; Yuan ( 2007 ), Zhu ( 2010 ), Chen et al . ( 2013 , 2014 ) and Zhang, Hua & Zhang ( 2015 ). The dotted lines represent the lithostratigraphic boundaries. KY – Kunyang Group; NT – Nantuo Formation; ZJQ – Zhujiaqing Formation; KCP – Kuanchuanpu Formation; YJH – Yanjiahe Formation; SJT – Shuijingtuo...

... are correlative with those of the Songlin section ( Zhou et al. 2011 ). We recognized at least one K-bentonite near the base of the Niutitang Formation at the two sections. The Taishanmiao section is ca. 25 km north of Yichang City in Hubei Province. In the base of the Shuijingtuo Formation at the section, two 10...

... ) Partial oral cone KUMIP 314095b; ( 7 ) part to 6 ; Scale bars=10 mm. Table 2 Locations from which hurdiid specimens are known. HCM=Holy Cross Mountains, Poland; Shuj.=Shuijingtuo Formation, China; Balang=Balang Formation, China; Jince=Jince Formation, Czech Republic; Spence=Langston Formation (Spence...

... Formation, and the contact is interpreted to be conformable ( Chen, 1984 ; L. Ding et al., 1992 ). It is overlain by trilobite-bearing black shales of the Shuijingtuo Formation. The Yanjiahe Formation is divided into three lithostratigraphic members. The lowest member (bed 3 of Chen, 1984 ) is about 12 m...

... as it approaches the dorsal margin, although it is a round node in specimens with the valve surface completely preserved. It is more strongly defined than in B. avannga but does not overhang the dorsal margin. Beyrichona chinensis Shu, 1990 , from the Shuijingtuo Formation (Cambrian Series 2) of Shaanxi...

... ) and Zhang and Clarkson ( 2012 ). The protaspid period of I . ichangensis can be divided into two stages (stages 0 and 1 sensu Zhang and Pratt, 1999 ). Dai and Zhang ( 2012 ) described protaspides and meraspid cranidia of Estaingia sinensis from the Shuijingtuo Formation (Hubei Province, South China...

... Province) and Shatan (Sichuan Province). At Wangjiaping, the Shuijingtuo Formation yielded a few benthic trilobites of Metaredlichia sp. belonging to the Redlichiacea but abundant planktonic trilobites represented by Eodiscina, which are different from the abundant planktonic and benthic trilobites...

.... 2014 , Possible animal embryos from the lower Cambrian (Stage 3) Shuijingtuo Formation, Hubei Province, South China : Journal of Paleontology , v. 88 , p. 385 – 394 , doi: 10.1666/13-062 . Browne W.E...