Avian skulls represent a diverse ornithuromorph fauna from the Lower Cretaceous Xiagou Formation, Gansu Province, China

doi:10.1111/jse.12823

IVPP-IR > 中科院古脊椎所（2000年以后）

	Avian skulls represent a diverse ornithuromorph fauna from the Lower Cretaceous Xiagou Formation, Gansu Province, China
	O'Connor, Jingmai K.1,2,3; Stidham, Thomas A.2,3,4; Harris, Jerald D.5; Lamanna, Matthew C.6; Bailleul, Alida M.2,3; Hu, Han 7; Wang, Min2,3 ; Hai-Lu You2,3,4
	2022-02-18
发表期刊	JOURNAL OF SYSTEMATICS AND EVOLUTION
ISSN	1674-4918
页码	27
通讯作者	O'Connor, Jingmai K.(joconnor@fieldmuseum.org)
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.
关键词	Aves avian cranium Changma locality Early Cretaceous Gansus Ornithuromorpha
DOI	10.1111/jse.12823
关键词[WOS]	BIRD AVES ORNITHOTHORACES ; ENANTIORNITHINE BIRD ; CHANGMA BASIN ; ICHTHYORNIS ; MORPHOLOGY ; EVOLUTION ; DIVERGENCE ; DISCOVERY ; TAXONOMY ; INSIGHTS
收录类别	SCI
语种	英语
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
项目资助者	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
WOS研究方向	Plant Sciences
WOS类目	Plant Sciences
WOS记录号	WOS:000757484700001
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/311034/21472
专题	中科院古脊椎所（2000年以后）
通讯作者	O'Connor, Jingmai K.
作者单位	1.Field Museum Nat Hist, Negaunee Integrat Res Ctr, Chicago, IL 60605 USA 2.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing 100044, Peoples R China 3.CAS Ctr Excellence Life & Paleoenvironm, Beijing 100044, Peoples R China 4.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China 5.Dixie State Univ, Dept Earth & Environm Sci, St George, UT 84770 USA 6.Carnegie Museum Nat Hist, Sect Vertebrate Paleontol, Pittsburgh, PA 15213 USA 7.Univ Oxford, Dept Earth Sci, Oxford OX1 3AN, England
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.