KMS Institute of Vertebrate Paleontology and Paleoanthropology
| A new small-bodied longipterygid (Aves: Enantiornithes) from the Aptian Jiufotang Formation preserving unusual gastroliths | |
O'connor, Jingmai1 ; Wang, Xiaoli2,3,4; Clark, Alexander5,6; Kuo, Pei-Chen5; Davila, Ryan; Wang, Yan2; Zheng, Xiaoting3; Zhou, Zhonghe7
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| 2025-11-01 | |
| 发表期刊 | PALAEONTOLOGIA ELECTRONICA
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| ISSN | 1935-3952 |
| 期号 | 0页码:38 |
| 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 | Shandong Provincial Natural Science Foundation[Ts20190954]###3598 ; Shandong Provincial Natural Science Foundation[ZR2020MD026]###3597 ; National Natural Science Foundation of China[42288201]###2097 ; National Natural Science Foundation of China[41402017]###142 |
| 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(0):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(0),38. |
| MLA | O'connor, Jingmai,et al."A new small-bodied longipterygid (Aves: Enantiornithes) from the Aptian Jiufotang Formation preserving unusual gastroliths".PALAEONTOLOGIA ELECTRONICA .0(2025):38. |
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