New Pachyportax fossils from the Late Miocene Shuitangba locality, Yunnan, revealing the early Bovini evolution and radiation

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	New Pachyportax fossils from the Late Miocene Shuitangba locality, Yunnan, revealing the early Bovini evolution and radiation
	Guo, DG; Abbas, SG; Jiangzuo, QG; Li, CX; Yang, YW; Cao, JY; Zou, B; Wang, SQ; Ji, XP
	2026
发表期刊	Palaeoworld
ISSN	1871-174X
卷号	35 期号:1
摘要	As a small-sized Bovini, Pachyportax, originated in the Late Miocene Siwaliks and subsequently dispersed to neighbouring regions in Southeast Asia and the Arabian Peninsula, and eventually reached Yunnan, China. However, no fossil material of this genus had been discovered in China prior to this study. Here we report a new species Pachyportax zhaotongensis n. sp., from an important fossil ape locality, the Shuitangba site in Zhaotong, Yunnan, China, dated at approximately 6.2 Ma. The new species displays the diagnostic characteristics of Pachyportax, such as a robust horn core that extends laterally and backward, with a slightly convex medial side and a flatter lateral side, featuring anterior and posterior keels; the cheek teeth are hypsodont, with moderately developed ribs, folds and basal pillars. It also shows some differences from the known species: the horn core insertion is distant from the orbit and shows no significant torsion, and the anterior and posterior keels on the horn core are less pronounced. These advanced characteristics indicated that Pachyportax zhaotongensis n. sp. represents a late evolutionary stage of Pachyportax. This is also the first report of Pachyportax in China. In addition, based on a phylogenetic analysis, we clarify the relationship of Selenoportax and Pachyportax, and briefly explore the evolution and geographical distribution of the two genera. (c) 2025 Elsevier B.V. and Nanjing Institute of Geology and Palaeontology, CAS. All rights are reserved, including those for text and data mining, AI training, and similar technologies.
收录类别	SCIE
语种	英语
文献类型	期刊论文
条目标识符	http://ir.kiz.ac.cn/handle/152453/15065
专题	管理、支撑部门_动物博物馆
推荐引用方式 GB/T 7714	Guo, DG,Abbas, SG,Jiangzuo, QG,et al. New Pachyportax fossils from the Late Miocene Shuitangba locality, Yunnan, revealing the early Bovini evolution and radiation[J]. Palaeoworld,2026,35(1).
APA	Guo, DG.,Abbas, SG.,Jiangzuo, QG.,Li, CX.,Yang, YW.,...&Ji, XP.(2026).New Pachyportax fossils from the Late Miocene Shuitangba locality, Yunnan, revealing the early Bovini evolution and radiation.Palaeoworld,35(1).
MLA	Guo, DG,et al."New Pachyportax fossils from the Late Miocene Shuitangba locality, Yunnan, revealing the early Bovini evolution and radiation".Palaeoworld 35.1(2026).

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