學術資源整合系統-相關推薦

 
作者Shan, Hsi-yin;Cheng, Yen-nien;Wu, Xiao-chun
出版日期2013
著作名稱The first fossil skull of Alligator sinensis from the Pleistocene, Taiwan, with a paleogeographic implication of the species
刊名Journal of Asian Earth Sciences
69
5
頁數17-25
被收錄索引SCI
主題古生物
關鍵字Alligator; Pleistocene; Taiwan
摘要A nearly complete fossil skull of Alligatoridae from the Pleistocene, Penghu Channel, east of Taiwan, is reported. It can be referred to the most latest clade of Alligatorinae, which includes Alligator sinensis, Alligator mississippiensis and Alligator mefferdi, on the basis of the following features: the splenial is excluded from the mandibular symphysis; the anterior tip of the splenial passes dorsal to the Meckelian groove; and the mandible is gently curved between the fourth alveoli and the mid dentary. It differs from A. mississippiensis and A. mefferdi mainly in the following characters: the breadth between the Supratemporal fenestrae is approximately equal to the interorbital width, the Snout is about half the length of the skull; and the anterior part of the snout is subtriangular in dorsal view. These features suggest that the Penghu alligator is most probably referable to A. sinensis. This is the only fossil skull of A. sinensis known. The discovery of the skull in Penghu Channel not only provides the first solid fossil evidence to indicate that the geological distribution of A. sinensis extended farther southeast than the historical/archeological range of
the species but also adds new information on the biodiversity of the Penghu fauna.
系統號NO000004719

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