A new Early Oligocene peradectine marsupial (Mammalia)from the Burqin region of Xinjiang, China
A new Early Oligocene peradectine marsupial (Mammalia)from the Burqin region of Xinjiang, China
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DOI：
10.1007/s00114-006-0182-2
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发表时间：
2007-03
影响因子：
--
通讯作者：
Xijun Ni;Jin Meng;Wen-Yu Wu;Jie. Ye
中科院分区：
文献类型：
--
作者：
Xijun Ni;Jin Meng;Wen-Yu Wu;Jie. Ye
第三纪有袋动物的记录在亚洲非常稀少。一新的有袋类动物--布氏准噶尔有袋类。et sp. nov.，新疆布尔津地区早渐新世克孜勒托尕依组中发现了一个新的化石。这个新物种是基于一个单一的右上M2。牙齿有一个直的中央嵴，这是Peradectines的特征。它的主要尖瓣倾斜颊，与paracone较小，低于metacone。锥柱和花柱尖发育较弱。这些人物是J。burqinensisofEurope-American Tertiary Peradectines，但它们也暗示了与亚洲早中新世Peradectines中的Siamoperadectes和Sinoperadectes的密切系统发育关系。
Tertiary marsupial records are very scarce in Asia. A new peradectine marsupial,Junggaroperadectes burqinensisgen. 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 distinguishJ. burqinensisfrom Euro-American Tertiary peradectines, but they also imply a close phylogenetic relationship toSiamoperadectesandSinoperadectes, two Asian Early Miocene peradectines.