Quantifying the gastral mass in Early Cretaceous ornithuromorphs (Aves, Ornithothoraces) from the Jehol avifauna

doi:10.1111/pala.12677

IVPP-IR

	Quantifying the gastral mass in Early Cretaceous ornithuromorphs (Aves, Ornithothoraces) from the Jehol avifauna
	Liu, Shumin 1; Li, Zhiheng1,2 ; Liu, Di 3; O'Connor, Jingmai K.4
	2023-09-01
发表期刊	PALAEONTOLOGY
ISSN	0031-0239
卷号	66 期号:5 页码:17
通讯作者	Liu, Shumin(liushuminnn@foxmail.com) ; O'Connor, Jingmai K.(joconnor@fieldmuseum.org)
摘要	Some birds intentionally ingest stones to facilitate digestion of hard foodstuffs, a behaviour inherited from non-avian dinosaurs and present in some of the earliest birds, as evidenced by clusters of gastroliths preserved within the abdominal cavity of a wide range of dinosaurs and Cretaceous birds. For the first time, high-resolution computed laminographic and computed tomographic scans were used to reconstruct the gastral mass in two species of non-neornithine ornithuromorph birds from the Lower Cretaceous Jehol Group. Four specimens of each taxon were analysed. Preservation of the gastral mass in most of these specimens is in situ and regarded as complete or nearly so. The number of gastroliths, their total volume, and their total mass relative to the estimated body mass were calculated for each specimen. The resultant gastral mass to body mass ratios fall within the range observed in extant birds, supporting previous inferences that the digestive system in non-neornithine ornithuromorphs was comparable to that of extant taxa. Compared to available data for non-volant non-avian theropods, the gastral mass is proportionately smaller in birds suggesting that the evolution of flight constrained gastral mass size in the theropod lineage. Currently available data on gastral mass characteristics suggests that Iteravis ate larger food particles compared to Archaeorhynchus but cannot be used to determine diet more precisely. Better understanding of the relationship between gastral mass characteristics and food items across a broader range of extant taxa may provide an indirect but important method through which to infer diet and digestive function in archosaurs.
关键词	Ornithuromorpha Aves gastrolith digestive system CT reconstruction diet
DOI	10.1111/pala.12677
关键词[WOS]	GRIT-USE ; BIRD AVES ; GASTROLITHS ; CHINA ; ECOLOGY ; DIET ; FOOD ; INGESTION ; DINOSAURS ; PATTERNS
收录类别	SCI
语种	英语
资助项目	We thank Yemao Hou, Pengfei Yin for VG studio teaching, CT scanning, and CT data uploading, Tao Zhao for data analysis, Wei Gao for photographs assistance, Zhen Zhang for extracting gastroliths. We thank two reviewers for their constructive comments and su ; Institute of Vertebrate of Paleontology and Paleoanthropology (IVPP)
项目资助者	We thank Yemao Hou, Pengfei Yin for VG studio teaching, CT scanning, and CT data uploading, Tao Zhao for data analysis, Wei Gao for photographs assistance, Zhen Zhang for extracting gastroliths. We thank two reviewers for their constructive comments and su ; Institute of Vertebrate of Paleontology and Paleoanthropology (IVPP)
WOS研究方向	Paleontology
WOS类目	Paleontology
WOS记录号	WOS:001095700300001
出版者	WILEY
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/23021
专题	中国科学院古脊椎动物与古人类研究所
通讯作者	Liu, Shumin; O'Connor, Jingmai K.
作者单位	1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing, Peoples R China 2.CAS Ctr Excellence Life & Paleoenvironm, 142 Xizhimenwai St, Beijing 100044, Peoples R China 3.Natl Nat Hist Museum China, 126 Tianqiao ST, Beijing 100050, Peoples R China 4.Field Museum Nat Hist, Negaunee Integrat Res Ctr, Chicago, IL 60605 USA
推荐引用方式 GB/T 7714	Liu, Shumin,Li, Zhiheng,Liu, Di,et al. Quantifying the gastral mass in Early Cretaceous ornithuromorphs (Aves, Ornithothoraces) from the Jehol avifauna[J]. PALAEONTOLOGY,2023,66(5):17.
APA	Liu, Shumin,Li, Zhiheng,Liu, Di,&O'Connor, Jingmai K..(2023).Quantifying the gastral mass in Early Cretaceous ornithuromorphs (Aves, Ornithothoraces) from the Jehol avifauna.PALAEONTOLOGY,66(5),17.
MLA	Liu, Shumin,et al."Quantifying the gastral mass in Early Cretaceous ornithuromorphs (Aves, Ornithothoraces) from the Jehol avifauna".PALAEONTOLOGY 66.5(2023):17.