Suckers (Fish, Catostomidae) from the Eocene of China account for the family’s current disjunct distributions |
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Authors: | CHANG Mee-mann MIAO Desui CHEN Yiyu ZHOU Jiajian CHEN Pingfu |
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Institution: | 1. Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing 100044, China 2. Natural History Museum, University of Kansas, Lawrence, KS 66045-2454, USA 3. Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430027, China |
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Abstract: | Unequivocal Eocene suckers from China are for the first time reported here. This discovery demonstrates that catostomids of
the Eocene Epoch (some 55-35 Ma ago) are scattered widely on mainland Asia as well as western North America. The present day
disjunct distribution pattern of catostomids, with 68 extant species widespread in North America and the northern part of
Middle America and only two in the restricted areas of Asia, is the result of their post-Eocene decline in Asia due to the
competitive pressure from cyprinids, their Late Cenozoic radiation in North America, and the vicariant and dispersal events
triggered by the changed biogeographic landscape. All of these prove to be a historical product of the geological, biological,
and climatic changes throughout the Cenozoic. |
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Keywords: | China catostomids Eocene biogeography |
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