caa a22 4500 445300043 CHVBK 20180317142554.0 cr unu---uuuuu 170323e20101201xx s 000 0 eng 10.1007/s11430-010-4087-8 doi (NATIONALLICENCE)springer-10.1007/s11430-010-4087-8 Community structure and composition of the Cambrian Chengjiang biota [Elektronische Daten] [FangChen Zhao, MaoYan Zhu, ShiXue Hu] Based on previously published species data (228 species in over 18 phyla) and field sampling (114 species and 18406 individuals) in the Chengjiang-Haikou-Anning area, we analyzed quantitatively the paleocommunity composition and structure of the Cambrian Chengjiang biota (Cambrian Series 2, eastern Yunnan, China). Arthropods dominate the community both in species diversity (species: 37%) and in abundance (individuals: 51.8%). Priapulids (individuals: 22.6%) and brachiopods (individuals: 16.3%) follow in abundance rank. The arthropod Kunmingella douvillei (26.2%), the priapulid Cricocosmia jinning-ensis (15.4%), and the brachiopod Diandongia pista (11%) are the three most abundant species. Ecological analyses show that the community was dominated by epifaunal organisms (species: 63%, individuals: 68.4%) followed by infaunal organisms (species: 11.9%, individuals: 25.9%), nektobenthic organisms (species: 11.5%, individuals: 2.6%), and pelagic organisms (species: 5.3%, individuals: 3.1%). The diverse feeding strategies, dominated by suspension feeders (species: 35.6%, individuals: 26.1%) and hunter/scavengers (species: 31.1%, individuals: 40.4%), indicate the former existence of a complex food chain and intense competition. Epifaunal vagrant omnivores (28.2%), infaunal vagrant hunter/scavengers (19.8%), epifaunal sessile suspension feeders (17.7%), and epifaunal vagrant hunter/scavengers (15.3%) were the most abundant ecological groups, represented primarily by arthropods, poriferans, priapulids, and brachiopods. Ecological group analyses reveal that the early Cambrian Chengjiang biota is similar in community patterns and functional relations to modern biotas in shallow marine settings. Science China Press and Springer-Verlag Berlin Heidelberg, 2010 Chengjiang biota nationallicence Cambrian nationallicence Cambrian explosion nationallicence evolution nationallicence paleocommunities nationallicence Zhao FangChen State key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, 210008, Nanjing, China aut Zhu MaoYan State key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, 210008, Nanjing, China aut Hu ShiXue State key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, 210008, Nanjing, China aut Science China Earth Sciences SP Science China Press 53/12(2010-12-01), 1784-1799 1674-7313 53:12<1784 2010 53 11430 https://doi.org/10.1007/s11430-010-4087-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11430-010-4087-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zhao FangChen State key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, 210008, Nanjing, China aut NATIONALLICENCE 700 1- Zhu MaoYan State key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, 210008, Nanjing, China aut NATIONALLICENCE 700 1- Hu ShiXue State key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, 210008, Nanjing, China aut NATIONALLICENCE 773 0- Science China Earth Sciences SP Science China Press 53/12(2010-12-01), 1784-1799 1674-7313 53:12<1784 2010 53 11430 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer