Taxonomy, morphology, and phylogeny of a nearly complete nanhsiungchelyid specimen from the Upper Cretaceous of the Nanxiong Basin, China

doi:10.1186/s13358-025-00385-2

IVPP-IR

	Taxonomy, morphology, and phylogeny of a nearly complete nanhsiungchelyid specimen from the Upper Cretaceous of the Nanxiong Basin, China
	Ke, Yuzheng 1,2; Shi, Zhongye 3; Tong, Haiyan 4,5; Li, Bicheng 3; Zhang, Yunfei 3; Han, Fenglu1 ; Joyce, Walter G.2
	2025-08-05
发表期刊	SWISS JOURNAL OF PALAEONTOLOGY
ISSN	1664-2376
卷号	144 期号:1 页码:11
通讯作者	Ke, Yuzheng(key1480@163.com) ; Tong, Haiyan(htong09@yahoo.fr)
摘要	Nanhsiungchelys, the type genus of Nanhsiungchelyidae, is an extinct turtle taxon that lived during the Late Cretaceous in southern China. Despite having a relatively abundant fossil record, the plastral morphology of Nanhsiungchelys is not well understood. Here, we describe a large specimen of Nanhsiungchelys with an associated skull and shell (SNHM 1558) from the Upper Cretaceous of Nanxiong Basin, China. The skull of SNHM 1558 is similar to that of Nanhsiungchelys yangi, but the carapace bears a pair of stick-like anterolateral processes. For this reason, we tentatively refer SNHM 1558 to Nanhsiungchelys cf. yangi. A concave plastron and a narrower posterior lobe indicate that SNHM 1558 may be a male. Nanhsiungchelys spp. was previously regarded as the most advanced taxa of Nanhsiungchelyidae, but some morphological characteristics suggest plesiomorphic similarities with the outgroup Adocus spp. A phylogenetic analysis using Adocus spp. as the outgroup suggests that Nanhsiungchelys spp. and Anomalochelys angulata form a monophyletic group at the base of Nanhsiungchelyidae. However, this phylogenetic result is not conclusive, as Nanhsiungchelys spp. is found deeply nested within the tree when Sinaspideretes wimani is employed as the outgroup.
关键词	Nanhsiungchelys Plastron Sexual dimorphism Phylogeny Late Cretaceous Nanxiong Basin
DOI	10.1186/s13358-025-00385-2
关键词[WOS]	INNER-MONGOLIA ; BAYAN MANDAHU ; TURTLE ; PROVINCE ; POSITION ; ADOCUS
收录类别	SCI
语种	英语
资助项目	China Scholarship Fund
项目资助者	China Scholarship Fund
WOS研究方向	Paleontology
WOS类目	Paleontology
WOS记录号	WOS:001544704200001
出版者	SPRINGER INT PUBL AG
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/24837
专题	中国科学院古脊椎动物与古人类研究所
通讯作者	Ke, Yuzheng; Tong, Haiyan
作者单位	1.China Univ Geosci Wuhan, Sch Earth Sci, Wuhan, Peoples R China 2.Univ Fribourg, Dept Geosci, Fribourg, Switzerland 3.Shanghai Sci & Technol Museum, Shanghai Nat Hist Museum, Shanghai, Peoples R China 4.Mahasarakham Univ, Palaeontol Res & Educ Ctr, Maha Sarakham, Thailand 5.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Ke, Yuzheng,Shi, Zhongye,Tong, Haiyan,et al. Taxonomy, morphology, and phylogeny of a nearly complete nanhsiungchelyid specimen from the Upper Cretaceous of the Nanxiong Basin, China[J]. SWISS JOURNAL OF PALAEONTOLOGY,2025,144(1):11.
APA	Ke, Yuzheng.,Shi, Zhongye.,Tong, Haiyan.,Li, Bicheng.,Zhang, Yunfei.,...&Joyce, Walter G..(2025).Taxonomy, morphology, and phylogeny of a nearly complete nanhsiungchelyid specimen from the Upper Cretaceous of the Nanxiong Basin, China.SWISS JOURNAL OF PALAEONTOLOGY,144(1),11.
MLA	Ke, Yuzheng,et al."Taxonomy, morphology, and phylogeny of a nearly complete nanhsiungchelyid specimen from the Upper Cretaceous of the Nanxiong Basin, China".SWISS JOURNAL OF PALAEONTOLOGY 144.1(2025):11.