New occurence of the Cambrian (Stage 4, Series 2) Guanshan Biota in Huize, Yunnan, South China JIANNI LIU, QIANG OU, JIAN HAN, ZHIFEI ZHANG, TONGJIANG HE, XIAOYONG YAO, DONGJING FU & DEGAN SHU Typical elements of the Guanshan Biota are reported from the Cambrian Stage 4 Wulongqing Formation of Huize, Qujing, South China, approximately 100 km north of the Guanshan fossil sites previously reported. Lithostratigraphy and biostratigraphy of the current Zhujiaqing section are also discussed herein. Representatives of various phyla recov- ered therein include not only previously described sponges, palaeoscolecids, arthropods, brachiopods, echinoderms, and vetulicolians, but also some potential new taxa, e.g. a new species of Vetulicola. This new occurrence not only expands the palaeogeographic distribution of the Guanshan Biota, but also strengthens the ties between the younger Chengjiang Biota and the older Kaili Biota (and also the coeval Burgess Shale community). • Key words: Guanshan Biota, lower Cambrian, China. LIU, J.N, OU, Q., HAN, J., ZHANG, Z.F., HE, T.J., YAO, X.Y., FU, D.J. & SHU, D.G. 2012. New occurence of the Cam- brian (Stage 4, Series 2) Guanshan Biota in Huize, Yunnan, South China. Bulletin of Geosciences 87(1), 125–132 (4 fig- ures). Czech Geological Survey, Prague. ISSN 1214-1119. Manuscript received September 22, 2010; accepted in re- vised form August 4, 2011; published online February 29, 2012; issued February 29, 2012. Jianni Liu (corresponding author), Early Life Institute and Key Laboratory of Continental Dynamics, Northwest Uni- versity, Xi’an 710069, P. R. China & Department of Earth Science, Freie Universität Berlin, Malteserstr. 74-100, Haus D, 12249, Berlin, Germany; liujianni@126.com • Qiang Ou, Early Life Evolution Laboratory, School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, P. R. China; ouqiang@cugb.edu.cn • Jian Han, Early Life Institute and Key Laboratory of Continental Dynamics, Northwest University, Xi’an 710069, P. R. China; elihanj@nwu.edu.cn • Zhifei Zhang, Early Life Institute and Key Laboratory of Continental Dynamics, Northwest Uni- versity, Xi’an 710069, P. R. China; elizf@nwu.edu.cn • Tongjiang He, Department of Geology, Northwest University, Xi’an 710069, P. R. China; hhttjj@126.com • Xiaoyong Yao, Department of Geology, Northwest University, Xi’an 710069, P. R. China; redsmall1982@sina.com • Dongjing Fu, Department of Geology, Northwest University, Xi’an 710069, P. R. China; fudongjing2007@yahoo.com.cn • Degan Shu, Early Life Institute and Key Laboratory of Conti- nental Dynamics, Northwest University, Xi’an 710069, P. R. China; elidgshu@nwu.edu.cn Trilobites Palaeolenus lantenoisi and Palaeolenus douvil- lei from the Cambrian Stage 4 Wulongqing Formation were first reported by Mansuy (1912) and subsequently restudied (Lu 1961, 1962; Luo 1974; Luo et al. 1994; Zhang 1966; Zhang et al. 1980). The bivalved arthropod Tuzoia sinensis Pan was first described by Pan (1957) from the lower part of the Wulongping Formation (Canglangpu Stage). Brachiopods (Rong 1974) and bradoriids (Zhang 1974, Li 1975) from the same horizon were also described earlier on. Non-trilobite arthropods and palaeoscolecids worms were first recovered in 1995 from yellow-greenish shale of the lower Wulongqing Formation in Gangtoucun section of Kunming, Yunnan (Luo et al. 1999). Excavation (1996) in the Lihuazhuang section of the same level in Yiliang, Yunnan, yielded more abundant arthropods, including the phyllocarid Yiliangocaris ellipticus Luo & Hu, the brachiopod Branchiocaris sp., eumalacostracans Habelia sp. (?), and trilobites Redlichia mansuyi Resser & Endo and Palaeolenus douvillei Mansuy, preserved together with abundant brachiopod specimens of Diandongia pista Rong (Luo et al. 1999). Accordingly, Luo et al. (1999) grouped them into the so-called Guanshan Biota, and subsequently investigated the vetulicolian Vetulicola gangtoucunensis Luo, Fu & Hu, arthropods Tuzoia tylodesa Luo & Hu, and Isoxys wudingensis Luo & Hu. Li et al. (2006) reviewed the Guanshan Biota and con- cluded that it is a Burgess Shale-type Biota consisting mainly of arthropods (accounting for ca 65% in abun- dance) and other animals (in particular vetulicolians, brachiopods, worms, and sponges, each group accounting for ca 8%). Hu et al. (2007) reported eocrinoid echinoderms Wudingeocrinus rarus Hu & Luo from the Wulongqing Formation in Wuding, Yunnan. This finding 125 DOI 10.3140/bull.geosci.1229