Cranial osteology of <i>Archaeoceratops oshimai</i> (Ornithischia: Ceratopsia) and phylogenetic evaluation of basal Ceratopsia

doi:10.1080/08912963.2025.2568096

IVPP-IR

	*Cranial osteology of Archaeoceratops oshimai* (Ornithischia: Ceratopsia) and phylogenetic evaluation of basal Ceratopsia**
	Wang, Yan-Chao 1,2; Zhang, Qian-Nan 1,2; You, Hai-Lu1,2
	2025-10-06
发表期刊	HISTORICAL BIOLOGY
ISSN	0891-2963
页码	18
通讯作者	Zhang, Qian-Nan(zhangqiannan@ivpp.ac.cn)
摘要	Archaeoceratops oshimai Dong & Azuma, 1997, is a representative early-diverging neoceratopsian dinosaur excavated from the Lower Cretaceous Xinminpu Group in the Mazongshan area of Gansu Province, China. As one of the basal members, it plays a critical role in understanding the origin and early evolution of horned dinosaurs. Here, we present a detailed redescription of its cranium based on a firsthand examination of the holotype, providing additional measurements and updated anatomical observations. Ten autapomorphic features have been identified, further solidifying the taxonomic validity of A. oshimai. Using a data matrix comprising 41 taxa and 371 characters, we re-evaluate the evolutionary relationships within Ceratopsia. Our phylogenetic analysis supports Psittacosauridae as the most basal ceratopsian and the sister clade of Neoceratopsia; 'Chaoyangsauridae' is not recovered as a monophyletic group, while members of 'Chaoyangsauridae' could form a monophyletic group with other neoceratopsians; Mosaiceratops is placed in the most basal position among non-chaoyangsauridae neoceratopsians, although it first appeared in the Late Cretaceous; A. oshimai is resolved within Neoceratopsia, closely related to other basal forms such as Auroraceratops and Liaoceratops. This study enhances our understanding of ceratopsian phylogeny and highlights the importance of thorough anatomical redescriptions for clarifying evolutionary patterns among early ornithischian dinosaurs.
关键词	Archaeoceratops oshimai Cranial osteology Phylogenetic analysis basal Ceratopsia Early Cretaceous Dr Rodrigo Temp M & uuml ller, Universidade Federal de Santa Maria, Brazil
DOI	10.1080/08912963.2025.2568096
关键词[WOS]	NEOCERATOPSIAN DINOSAUR ; EARLY EVOLUTION ; INNER-MONGOLIA ; GANSU PROVINCE ; PSITTACOSAURIDAE ; HISTORY
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[42372030] ; National Natural Science Foundation of China[42288201]
项目资助者	National Natural Science Foundation of China
WOS研究方向	Life Sciences & Biomedicine - Other Topics ; Paleontology
WOS类目	Biology ; Paleontology
WOS记录号	WOS:001586691100001
出版者	TAYLOR & FRANCIS LTD
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/24929
专题	中国科学院古脊椎动物与古人类研究所
通讯作者	Zhang, Qian-Nan
作者单位	1.Chinese Acad Sci, Key Lab Vertebrate Evolut & Human Origins, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China 2.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yan-Chao,Zhang, Qian-Nan,You, Hai-Lu. Cranial osteology of Archaeoceratops oshimai (Ornithischia: Ceratopsia) and phylogenetic evaluation of basal Ceratopsia[J]. HISTORICAL BIOLOGY,2025:18.
APA	Wang, Yan-Chao,Zhang, Qian-Nan,&You, Hai-Lu.(2025).Cranial osteology of Archaeoceratops oshimai (Ornithischia: Ceratopsia) and phylogenetic evaluation of basal Ceratopsia.HISTORICAL BIOLOGY,18.
MLA	Wang, Yan-Chao,et al."Cranial osteology of Archaeoceratops oshimai (Ornithischia: Ceratopsia) and phylogenetic evaluation of basal Ceratopsia".HISTORICAL BIOLOGY (2025):18.