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A new genus of aplodontid rodent (mammalia, rodentia) from the late oligocene of northern junggar basin, china.
MedLine Citation:
PMID:  23359629     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
A new genus and species of aplodontid rodent, Proansomys dureensis, from the late Oligocene of the northern Junggar Basin of China is described. The new genus is referred to as Ansomyinae because the ectoloph on the upper cheek teeth, although not fully crested, has attained the same characteristic bucket-handle-shaped configuration as other members of the subfamily. It represents the earliest record of the subfamily yet discovered in Asia and is more plesiomorphic than species of the genus Ansomys in having a partly crested ectoloph, a lower degree of lophodonty, and less complex tooth basins (lacking accessory lophules). Proansomys has transitional features between Prosciurus and Ansomys, suggesting that the Ansomyinae derived from a group of aplodontids related to Prosciurus, as did other advanced aplodontid rodents. This provides new light on the paleobiogeography of the Ansomyinae.
Authors:
Shundong Bi; Jin Meng; Sarah McLean; Wenyu Wu; Xijun Ni; Jie Ye
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Publication Detail:
Type:  Journal Article     Date:  2013-01-24
Journal Detail:
Title:  PloS one     Volume:  8     ISSN:  1932-6203     ISO Abbreviation:  PLoS ONE     Publication Date:  2013  
Date Detail:
Created Date:  2013-01-29     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101285081     Medline TA:  PLoS One     Country:  United States    
Other Details:
Languages:  eng     Pagination:  e52625     Citation Subset:  IM    
Affiliation:
Key Laboratory of Evolutionary Systematics of Vertebrates, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing, China ; Department of Biology, Indiana University of Pennsylvania, Indiana, Pennsylvania, United States of America.
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