A new small-bodied longipterygid (Aves: Enantiornithes) from the Aptian Jiufotang Formation preserving unusual gastroliths

doi:10.26879/1589

IVPP-IR

	A new small-bodied longipterygid (Aves: Enantiornithes) from the Aptian Jiufotang Formation preserving unusual gastroliths
	O'connor, Jingmai1 ; Wang, Xiaoli 2,3,4; Clark, Alexander 5,6; Kuo, Pei-Chen 5; Davila, Ryan ; Wang, Yan 2; Zheng, Xiaoting 3; Zhou, Zhonghe7
	2025-11-01
发表期刊	PALAEONTOLOGIA ELECTRONICA
ISSN	1935-3952
页码	38
通讯作者	O'connor, Jingmai(jingmai@fieldmuseum.org) ; Wang, Xiaoli(wangxiaoli@lyu.edu.cn)
摘要	The Longipterygidae are a diverse group of small to medium sized enantiornithine birds with elongate rostra and distally restricted dentition known from the Early Cretaceous Jehol Lagerst & auml;tten. The largest taxon, Longipteryx, is known from dozens of specimens but comparatively little is known about small-bodied taxa, sometimes resolved in a subclade, the Longirostravinae. Here we describe a small longipterygid representing a new taxon, Chromeornis funkyi gen. et sp. nov., with a combination of features present in longirostravines and Longipteryx. Cladistic analysis indicates the new species is a member of the Longipteryginae, more closely related to Longipteryx than other longipterygids. The specimen preserves extensive soft tissue including traces of the eyes, skin, and feathers, as well as an unusual mass of gastroliths preserved appressed against the left lateral margin of the cervical vertebrae. Computedtomography based comparison with the in situ gastric mill preserved in the sympatric ornithuromorphs Archaeorhynchus and Iteravis strongly suggests these gastroliths are not gizzard stones. The absence of a gastric mill in enantiornithines is consistent with pectoral girdle morphology that indicates limited flight capabilities in Early Cretaceous species suggesting ground take off, a necessity of collecting stones, was energetically costly compared to ornithuromorphs. Increases in body mass due to a large gastric mill may have further impeded volant locomotion resulting in a low cost-benefit tradeoff such that this structure was unlikely to evolve during early enantiornithine evolution.
关键词	Longipterygidae new genus new species Jehol Biota regurgitalite gastrolith Aves Avialae.
DOI	10.26879/1589
关键词[WOS]	LIAONING PROVINCE ; SOFT-TISSUE ; BIRD ; FOSSIL ; CHINA ; ORNITHOTHORACES ; CHAOYANGENSIS ; PRESERVATION ; INFORMATION ; SPECIMEN
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[42288201]###2097 ; National Natural Science Foundation of China[41402017]###142 ; Shandong Provincial Natural Science Foundation[ZR2020MD026]###3597 ; Shandong Provincial Natural Science Foundation[Ts20190954]###3598
项目资助者	National Natural Science Foundation of China ; Shandong Provincial Natural Science Foundation
WOS研究方向	Paleontology
WOS类目	Paleontology
WOS记录号	WOS:001633777700001
出版者	COQUINA PRESS
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/25218
专题	中国科学院古脊椎动物与古人类研究所
通讯作者	O'connor, Jingmai; Wang, Xiaoli
作者单位	1.Field Museum Nat Hist, Negaunee Integrat Res Ctr, Chicago, IL 60605 USA 2.Linyi Univ, Coll Life Sci, Linyi 276005, Peoples R China 3.Shandong Tianyu Museum Nat, Pingyi 273300, Peoples R China 4.Shandong Univ Sci & Technol, Coll Earth Sci & Engn, Qingdao 266590, Peoples R China 5.Field Museum Nat Hist, Negaunee Integrat Res Ctr, Chicago, IL 60605 USA 6.Univ Chicago, Comm Evolutionary Biol, Chicago, IL 60637 USA 7.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing 100044, Peoples R China
推荐引用方式 GB/T 7714	O'connor, Jingmai,Wang, Xiaoli,Clark, Alexander,et al. A new small-bodied longipterygid (Aves: Enantiornithes) from the Aptian Jiufotang Formation preserving unusual gastroliths[J]. PALAEONTOLOGIA ELECTRONICA,2025:38.
APA	O'connor, Jingmai.,Wang, Xiaoli.,Clark, Alexander.,Kuo, Pei-Chen.,Davila, Ryan.,...&Zhou, Zhonghe.(2025).A new small-bodied longipterygid (Aves: Enantiornithes) from the Aptian Jiufotang Formation preserving unusual gastroliths.PALAEONTOLOGIA ELECTRONICA,38.
MLA	O'connor, Jingmai,et al."A new small-bodied longipterygid (Aves: Enantiornithes) from the Aptian Jiufotang Formation preserving unusual gastroliths".PALAEONTOLOGIA ELECTRONICA (2025):38.