First Record of Hoplictis(Carnivora,Mustelidae) in East Asia from the Miocene of the Ulungur River Area,Xinjiang,Northwest China  

作　　者：Alberto VALENCIANO JIANGZUO Qigao WANG Shiqi LI Chunxiao ZHANG Xiaoxiao YE Je 

机构地区：[1]Research and Exhibitions Department, Iziko Museums of South Africa [2]Department of Biological Sciences, University of Cape Town, Palaeobiological Research Group [3]Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences [4]CAS Center for Excellence in Life and Paleoenvironment [5]University of Chinese Academy of Sciences [6]Department of Paleontology,American Museum of Natural History [7]CAS Center for Excellence in Tibetan Plateau Earth Sciences [8]Tianjin Natural History Museum

出　　处：《Acta Geologica Sinica(English Edition)》2019年第2期251-264,共14页地质学报（英文版）

基　　金：supported by the Chinese Academy of Sciences (Grant Nos.XDA20070203, XDB26000000, QYZDY-SSW-DQC-22, GJHZ1885);the National Natural Science Foundation of China (Grant Nos. 41430102 and 41772018, 41625005)

摘　　要：The first unequivocal remains of medium to large-sized mustelids from the middle Miocene Halamagai and Kekemaideng formations have been found in the Ulungur River area, Xinjiang, northwestern China. These new fossils are referred to the hypercarnivorous mustelid Hoplictis Ginsburg, 1961 and denote the first record of the genus in East Asia.We define Hoplictis baihu n. sp., for the mustelid from Tieersihabahe(Halamagai Fm.), which represents the smallest species of the genus. This primitive form is closer to H. florancei and H. noueli than to H. anatolicus and later, larger and more derived Hoplictis spp., from Europe and North America. A large toothless mandible from Duolebulejin(Kekemaiden Fm.) is assigned to Hoplictis cf. helbingi, and it presumably might represent the first record of H. helbingi outside Western Europe. The systematic position of Hoplicitis in relation to Ischyrictis with which it is similar is clarified. The occurrence in East Asia of two species of Hoplictis greatly expands the known distribution and diversity of the genus, and supports a Palaearctic Neogene dispersal event of carnivorans between Europe and Asia during the late Shanwangian–early Tunggurian equivalent to MN5–6 in Europe, and indication of another dispersal event from Europe to North America,through Northwest China during the late Tunggurian, equivalent to MN7–8 in Europe.The first unequivocal remains of medium to large-sized mustelids from the middle Miocene Halamagai and Kekemaideng formations have been found in the Ulungur River area, Xinjiang, northwestern China. These new fossils are referred to the hypercarnivorous mustelid Hoplictis Ginsburg, 1961 and denote the first record of the genus in East Asia.We define Hoplictis baihu n. sp., for the mustelid from Tieersihabahe(Halamagai Fm.), which represents the smallest species of the genus. This primitive form is closer to H. florancei and H. noueli than to H. anatolicus and later, larger and more derived Hoplictis spp., from Europe and North America. A large toothless mandible from Duolebulejin(Kekemaiden Fm.) is assigned to Hoplictis cf. helbingi, and it presumably might represent the first record of H. helbingi outside Western Europe. The systematic position of Hoplicitis in relation to Ischyrictis with which it is similar is clarified. The occurrence in East Asia of two species of Hoplictis greatly expands the known distribution and diversity of the genus, and supports a Palaearctic Neogene dispersal event of carnivorans between Europe and Asia during the late Shanwangian–early Tunggurian equivalent to MN5–6 in Europe, and indication of another dispersal event from Europe to North America,through Northwest China during the late Tunggurian, equivalent to MN7–8 in Europe.

关 键 词：vertebrate PALEONTOLOGY PALEOBIOGEOGRAPHY hypercarnivore Hoplictis Ischyrictis MIOCENE XINJIANG 

分 类 号：Q915[天文地球—古生物学与地层学]