The smallest known specimen of <i>Microraptor</i> (Dinosauria: Dromaeosauridae) from the Jiufotang Formation in northeastern China

doi:10.1080/08912963.2024.2385604

IVPP-IR

	*The smallest known specimen of Microraptor* (Dinosauria: Dromaeosauridae) from the Jiufotang Formation in northeastern China**
	Wang, Ranwei 1,2; Pei, Rui 1
	2024-08-14
发表期刊	HISTORICAL BIOLOGY
ISSN	0891-2963
页码	11
通讯作者	Pei, Rui(peirui@ivpp.ac.cn)
摘要	The Early Cretaceous Jehol Biota in northeastern China has yielded a diversity of feathered dromaeosaurid dinosaurs and expanded our knowledge of avian origin and flight evolution. However, histology-based ontogenetic references and detailed morphological studies remain limited relative to the abundant fossils. Here, a new specimen of microraptorine from the Lower Cretaceous Jiufotang Formation is described. This specimen includes a nearly complete postcranial skeleton and inferred as a Microraptor based on revised osteological characters. The femoral length of the new specimen is less than 5 cm, making it the smallest dromaeosaurid individual reported from the Jehol Biota until now. Osteohistological analysis reveals that this individual was a juvenile that is less than one-year old. The new specimen provides additional morphological details that are poorly preserved in the other Microraptor specimens, including aspects of the coracoid, ilium, and tail. Additionally, the sacrals and pubic symphysis of the new specimen have respectively fused at the juvenile stage. This phenomenon suggests caution should be taken in using skeletal fusion for assessing the ontogenetic stage of Microraptor specimens, highlighting the importance of histological analysis.
关键词	Dromaeosauridae Microraptor Jehol Biota Early Cretaceous osteohistology
DOI	10.1080/08912963.2024.2385604
关键词[WOS]	FEATHERED DINOSAUR ; JEHOL GROUP ; THEROPOD
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[42372031] ; National Natural Science Foundation of China[42288201] ; National Natural Science Foundation of China[41972025]
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:001291789800001
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/311034/23951
专题	中国科学院古脊椎动物与古人类研究所
通讯作者	Pei, Rui
作者单位	1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing, 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, Ranwei,Pei, Rui. The smallest known specimen of Microraptor (Dinosauria: Dromaeosauridae) from the Jiufotang Formation in northeastern China[J]. HISTORICAL BIOLOGY,2024:11.
APA	Wang, Ranwei,&Pei, Rui.(2024).The smallest known specimen of Microraptor (Dinosauria: Dromaeosauridae) from the Jiufotang Formation in northeastern China.HISTORICAL BIOLOGY,11.
MLA	Wang, Ranwei,et al."The smallest known specimen of Microraptor (Dinosauria: Dromaeosauridae) from the Jiufotang Formation in northeastern China".HISTORICAL BIOLOGY (2024):11.