Affinities and palaeobiogeographical significance of some Ordovician bivalves from East Yunnan,China |
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| Authors: | Fang Zong-Jie John C.W. Cope |
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| Affiliation: | 1. State Key Laboratory of Palaeobiology and Stratigraphy , Nanjing Institute of Geology and Palaeontology, Chinese Academy of Science , Nanjing, 210008, People's Republic of China zjfang@nigpas.ac.cn;3. State Key Laboratory of Palaeobiology and Stratigraphy , Nanjing Institute of Geology and Palaeontology, Chinese Academy of Science , Nanjing, 210008, People's Republic of China |
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| Abstract: | Comparisons of conodont and trilobite communities from the Arenig-Llanvirn of northern Spitsbergen show that both groups were influenced by the same environmental factors, related to a shallow to deep water profile at the western edge of the proto-Atlantic Ocean (Iapetus). The majority of both conodonts and trilobites had benthic or nektobenthic habits; a few genera of both groups were pelagic. Temperature was a major influence on the distribution of conodonts; similar genera could occur on both sides of ancient oceans (e.g. Iapetus) given the same temperature regime. |
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| Keywords: | bivalves Cycloconchoidea Ordovician Hongshiya Formation East Yunnan China |
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