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1. chinaXiv:202201.00084 [pdf]

A Late Pliocene Hipparion houfenense fauna from Yegou, Nihewan Basin and its biostratigraphic significance

LIU Jin-Yi; ZHANG Ying-Qi; CHI Zhen-Qing; WANG Yong; YANG Jin-Song; ZHENG Shao-Hua
Subjects: Biology >> Zoology

Currently, there are still different views regarding the chronology of the Late Cenozoic deposits in the Nihewan Basin, which results from the contradiction between biostratigraphic correlations based on mammalian fossils and magnetostratigraphic dating results. Biostratigraphic correlations indicate that the aeolian red clay exposed in the Sanggan River canyon, the fluviolacustrine red clay with sands and gravels, and the sandy clay of swamp facies on both sides of the lower reaches of the Huliu River belong to the Upper Pliocene, whereas the magnetostratigraphic dating usually correlates them to the Lower Pleistocene. In October 2011, a collection of mammalian fossils was unearthed from a block of collapsed deposits at Yegou in the Nihewan Basin, which is about 300 m north of the Laowogou section that is well known for the Pliocene mammalian fossils from its lower part. The Yegou fossils are identified herein as 10 species in 9 genera: Nyctereutes tingi, N. sinensis, Pachycrocuta pyrenaica, Homotherium sp., Hipparion (Plesiohipparion) houfenense, Dicerorhinus sp., Muntiacus sp., Axis shansius, Gazella blacki, and Paracamelus sp. The fauna is quite different from the classic Early Pleistocene Nihewan Fauna in composition and provides new evidence for the existence of the Upper Pliocene in the Nihewan Basin. Based on a systematic description of the fauna, its composition and geological age are discussed, and the compositional features of large mammals of the Late Pliocene and the Early Pleistocene mammalian faunas in the Nihewan Basin are summarized.

submitted time 2022-01-24 Cooperative journals:《古脊椎动物学报》 Hits3666Downloads474 Comment 0

2. chinaXiv:201908.00118 [pdf]

Five new species of Arvicolinae and Myospalacinae from the?Late Pliocene?Early Pleistocene of Nihewan Basin

ZHENG Shao-Hua; ZHANG Ying-Qi; ?CUI Ning
Subjects: Biology >> Zoology

The Nihewan Basin has been well known for its Cezonoic fossiliferous fluviolacustrine deposits and paleolithic sites for almost a century. There have been considerable research efforts devoted to the understanding of the geology, chronology, and stratigraphy of this?complex of sedimentary body. The current fundamental problem lies in the chronological aspect?of the Nihewan Beds. Arvicolinae and Myospalacinae are two groups of rodents characterized?by rapid evolutionary rates and quantifiable evolutionary trends, and hence particularly helpful?in Late Cenozoic biostratigraphic correlations. Therefore, we briefly describe three new species?of Arvicolinae and two new species of Myospalacinae that mainly came from the selected?sections in the Nihewan Basin. Hopefully, they would contribute towards the establishment of the?biostratigraphic framework of the Nihewan Basin and provide new evidence on the chronological?understanding of the Nihewan Beds from an evolutionary point of view.

submitted time 2019-08-26 Cooperative journals:《古脊椎动物学报》 Hits9529Downloads1873 Comment 0

3. chinaXiv:201804.01251 [pdf]

Fossil gibbons (Mammalia, Hylobatidae) from the Pleistocene of Chongzuo, Guangxi Zhuang Autonomous Region, China

ZHANG Ying-Qi; JIN Chang-Zhu; WANG Yuan; Alejandra ORTIZ; HE Kai; Terry HARRISON
Subjects: Geosciences >> Geology

Recent fieldwork at Pleistocene cave sites in the Chongzuo area in Guangxi Zhuang Autonomous Region has yielded 33 isolated teeth of fossil hylobatids. Comparisons indicate that the teeth can all be referred to a single species of Nomascus, but the material is insufficient to assign it to a particular species. The molars are slightly larger on average than those of extant species of Nomascus, but unlike contemporary great apes from the Pleistocene of southern China, the hylobatids do not seem to have undergone a change in dental size through time. Nomascus is not present in the Chongzuo area today, but historical records indicate that the genus may have been widely distributed across southern China in the recent past.

submitted time 2018-04-04 Cooperative journals:《古脊椎动物学报》 Hits6318Downloads1957 Comment 0

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