Avian skulls represent a diverse ornithuromorph fauna from the Lower Cretaceous Xiagou Formation, Gansu Province, China
文献类型：期刊论文
| 作者 | O'Connor, Jingmai K.5,6,7; Stidham, Thomas A.4,5,6; Harris, Jerald D.3; Lamanna, Matthew C.2; Bailleul, Alida M.5,6; Hu, Han1; Wang, Min5,6 ; Hai-Lu You4,5,6
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| 刊名 | JOURNAL OF SYSTEMATICS AND EVOLUTION
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| 出版日期 | 2022-02-18 |
| 页码 | 27 |
| 关键词 | Aves avian cranium Changma locality Early Cretaceous Gansus Ornithuromorpha |
| ISSN号 | 1674-4918 |
| DOI | 10.1111/jse.12823 |
| 通讯作者 | O'Connor, Jingmai K.(joconnor@fieldmuseum.org) |
| 英文摘要 | We describe six specimens consisting of cranial remains and associated partial presacral axial series belonging to ornithuromorph birds from the Changma locality of the Lower Cretacous Xiagou Formation of northwestern Gansu Province, China. Comparison among specimens is limited by the paucity of overlapping elements, their differing exposed views, and, in some specimens, poor preservation. Despite this, three separate taxa are represented, evidenced by differences in their dentary dentitions: one specimen is edentulous, another has sharp, closely spaced, relatively high-crowned and peg-like teeth, and a third preserves blunt, relatively low-crowned teeth placed in a communal groove, a morphology previously reported among adult birds only in Hesperornithiformes. We propose that the high-crowned specimen may be referred to Gansus yumenensis based on shared similarities with the closely related Iteravis huchzermeyeri, including a very similar dentition and an edentulous premaxilla with elongate, unfused frontal processes and no palatal processes. The two other specimens are considered new taxa, for which we erect the names Meemannavis ductrix gen. et sp. nov. and Brevidentavis zhangi gen. et sp. nov. These new specimens confirm that the Changma locality is dominated by ornithuromorph birds and contribute to a better understanding of this important avifauna. The observed variation in dental morphology hints at trophic diversity like that observed in ornithuromorphs from the penecontemporaneous Jehol Group of northeastern China. |
| WOS关键词 | BIRD AVES ORNITHOTHORACES ; ENANTIORNITHINE BIRD ; CHANGMA BASIN ; ICHTHYORNIS ; MORPHOLOGY ; EVOLUTION ; DIVERGENCE ; DISCOVERY ; TAXONOMY ; INSIGHTS |
| 资助项目 | National Natural Science Foundation of China[41772013] ; National Natural Science Foundation of China[41688103] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB26000000] ; Chinese Academy of Sciences-Presidential International Fellowship Initiative Program |
| WOS研究方向 | Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000757484700001 |
| 出版者 | WILEY |
| 资助机构 | National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Chinese Academy of Sciences-Presidential International Fellowship Initiative Program |
| 源URL | [http://119.78.100.205/handle/311034/21471]  |
| 专题 | 古脊椎动物与古人类研究所_图书馆1 |
| 通讯作者 | O'Connor, Jingmai K. |
| 作者单位 | 1.Univ Oxford, Dept Earth Sci, Oxford OX1 3AN, England 2.Carnegie Museum Nat Hist, Sect Vertebrate Paleontol, Pittsburgh, PA 15213 USA 3.Dixie State Univ, Dept Earth & Environm Sci, St George, UT 84770 USA 4.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China 5.CAS Ctr Excellence Life & Paleoenvironm, Beijing 100044, Peoples R China 6.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing 100044, Peoples R China 7.Field Museum Nat Hist, Negaunee Integrat Res Ctr, Chicago, IL 60605 USA |
| 推荐引用方式 GB/T 7714 | O'Connor, Jingmai K.,Stidham, Thomas A.,Harris, Jerald D.,et al. Avian skulls represent a diverse ornithuromorph fauna from the Lower Cretaceous Xiagou Formation, Gansu Province, China[J]. JOURNAL OF SYSTEMATICS AND EVOLUTION,2022:27. |
| APA | O'Connor, Jingmai K..,Stidham, Thomas A..,Harris, Jerald D..,Lamanna, Matthew C..,Bailleul, Alida M..,...&Hai-Lu You.(2022).Avian skulls represent a diverse ornithuromorph fauna from the Lower Cretaceous Xiagou Formation, Gansu Province, China.JOURNAL OF SYSTEMATICS AND EVOLUTION,27. |
| MLA | O'Connor, Jingmai K.,et al."Avian skulls represent a diverse ornithuromorph fauna from the Lower Cretaceous Xiagou Formation, Gansu Province, China".JOURNAL OF SYSTEMATICS AND EVOLUTION (2022):27. |
入库方式： OAI收割
来源：古脊椎动物与古人类研究所
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