A new record of late Permian (Wuchiapingian) ammonoid Stacheoceras from an exotic limestone block in the Yarlung-Zangbo Suture Zone, South Xizang (Tibet), China
Sun XY, Dai X, Liu XK, Jiang SY, Song HJ (2026)
Publication Type: Journal article
Publication year: 2026
Journal
Book Volume: 35
Article Number: 201166
Journal Issue: 6
DOI: 10.1016/j.palwor.2026.201166
Abstract
Permian ammonoids in Xizang (Tibet) are rare and poorly documented. In this study, we describe two ammonoid species, i.e., Stacheoceras trimurti Diener, 1897 and a new species Stacheoceras resaensis n. sp., from the Xiukang limestone block in the Yarlung-Zangbo Suture Zone. This finding increases the known ammonoid diversity of the Xiukang limestone and its surrounding blocks from eight to ten species. The occurrence of S. trimurti indicates a Wuchiapingian age. By summarizing ammonoid, brachiopod, fusulinid and conodont data, we reassess the age range of the limestone blocks in Lhaze County, which spans from the Wordian to the Wuchiapingian, and possibly extends into the Induan. Finally, we summarise the taxonomy of Stacheoceras, recording at least 32 valid species, and discuss their temporal and spatial distributions. Stacheoceras first appeared in the Kungurian and persisted until the Changhsingian, with a palaeogeographic distribution largely confined to low- and mid-latitude regions.
Involved external institutions
China (CN)How to cite
APA:
Sun, X.Y., Dai, X., Liu, X.K., Jiang, S.Y., & Song, H.J. (2026). A new record of late Permian (Wuchiapingian) ammonoid Stacheoceras from an exotic limestone block in the Yarlung-Zangbo Suture Zone, South Xizang (Tibet), China. Palaeoworld, 35(6). https://doi.org/10.1016/j.palwor.2026.201166
MLA:
Sun, Xin Yuan, et al. "A new record of late Permian (Wuchiapingian) ammonoid Stacheoceras from an exotic limestone block in the Yarlung-Zangbo Suture Zone, South Xizang (Tibet), China." Palaeoworld 35.6 (2026).
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