Journal
SCIENCE IN CHINA SERIES D-EARTH SCIENCES
Volume 44, Issue 7, Pages 577-586Publisher
SCIENCE PRESS
DOI: 10.1007/BF02875332
Keywords
China; catostomids; Eocene; biogeography
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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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