A new Early Oligocene peradectine marsupial (Mammalia)from the Burqin region of Xinjiang,China |
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Authors: | Xijun Ni Jin Meng Wenyu Wu Jie Ye |
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Institution: | (1) Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, P. O. Box 643, Beijing, 100044, People’s Republic of China;(2) Division of Paleontology, American Museum of Natural History, Central Park West at 79th Street, New York, NY 10024, USA |
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Abstract: | Tertiary marsupial records are very scarce in Asia. A new peradectine marsupial, Junggaroperadectes burqinensis gen. et sp. nov., is reported from the Early Oligocene Keziletuogayi Formation in the Burqin region, Xinjiang, China. This
new species is based on a single right upper M2. The tooth possesses a straight centrocrista, a characteristic of peradectines.
Its main cusps lean buccally, with the paracone being smaller and lower than the metacone. The conules and stylar cusps are
weakly developed. These characters distinguish J. burqinensis from Euro-American Tertiary peradectines, but they also imply a close phylogenetic relationship to Siamoperadectes and Sinoperadectes, two Asian Early Miocene peradectines. |
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