Early Paleocene landbird supports rapid phylogenetic and morphological diversification of crown birds after the K-Pg mass extinction

doi:10.1073/pnas.1700188114

IVPP-IR > 中科院古脊椎所（2000年以后）

	Early Paleocene landbird supports rapid phylogenetic and morphological diversification of crown birds after the K-Pg mass extinction
	Ksepka, Daniel T.1; Stidham, Thomas A.2; Williamson, Thomas E.3
	2017-07-25
发表期刊	PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
ISSN	0027-8424
卷号	114 期号:30 页码:8047-8052
通讯作者	Ksepka, Daniel T.(dksepka@brucemuseum.org)
摘要	Evidence is accumulating for a rapid diversification of birds following the K-Pg extinction. Recent molecular divergence dating studies suggest that birds radiated explosively during the first few million years of the Paleocene; however, fossils from this interval remain poorly represented, hindering our understanding of morphological and ecological specialization in early neoavian birds. Here we report a small fossil bird from the Nacimiento Formation of New Mexico, constrained to 62.221-62.517 Ma. This partial skeleton represents the oldest arboreal crown group bird known. Phylogenetic analyses recovered Tsidiiyazhi abini gen. et sp. nov. as a member of the Sandcoleidae, an extinct basal clade of stem mousebirds (Coliiformes). The discovery of Tsidiiyazhi pushes the minimum divergence ages of as many as nine additional major neoavian lineages into the earliest Paleocene, compressing the duration of the proposed explosive post-K-Pg radiation of modern birds into a very narrow temporal window parallel to that suggested for placental mammals. Simultaneously, Tsidiiyazhi provides evidence for the rapid morphological (and likely ecological) diversification of crown birds. Features of the foot indicate semizygodactyly (the ability to facultatively reverse the fourth pedal digit), and the arcuate arrangement of the pedal trochleae bears a striking resemblance to the conformation in owls (Strigiformes). Inclusion of fossil taxa and branch length estimates impacts ancestral state reconstructions, revealing support for the independent evolution of semizygodactyly in Coliiformes, Leptosomiformes, and Strigiformes, none of which is closely related to extant clades exhibiting full zygodactyly.
关键词	aves phylogeny morphology fossil evolution
DOI	10.1073/pnas.1700188114
关键词[WOS]	STEM-GROUP REPRESENTATIVES ; FOSSIL RECORD ; EVOLUTIONARY HISTORY ; GRASPING FOOT ; RAIN-FOREST ; NEW-MEXICO ; RADIATION ; EOCENE ; AVES ; PSITTACIFORMES
收录类别	SCI
语种	英语
资助项目	National Evolutionary Synthesis Center (National Science Foundation)[EF-0905606] ; National Evolutionary Synthesis Center (National Science Foundation)[EF-0423641] ; Chinese National Natural Science Foundation[NSFC41472025] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB03020501] ; Bureau of Land Management ; National Science Foundation[EAR-0207750] ; National Science Foundation[EAR-1325544]
项目资助者	National Evolutionary Synthesis Center (National Science Foundation) ; Chinese National Natural Science Foundation ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Bureau of Land Management ; National Science Foundation
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000406189900079
出版者	NATL ACAD SCIENCES
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/8042
专题	中科院古脊椎所（2000年以后）
通讯作者	Ksepka, Daniel T.
作者单位	1.Bruce Museum, Greenwich, CT 06830 USA 2.Chinese Acad Sci, Key Lab Vertebrate Evolut & Human Origins, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China 3.New Mexico Museum Nat Hist & Sci, Albuquerque, NM 87104 USA
推荐引用方式 GB/T 7714	Ksepka, Daniel T.,Stidham, Thomas A.,Williamson, Thomas E.. Early Paleocene landbird supports rapid phylogenetic and morphological diversification of crown birds after the K-Pg mass extinction[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2017,114(30):8047-8052.
APA	Ksepka, Daniel T.,Stidham, Thomas A.,&Williamson, Thomas E..(2017).Early Paleocene landbird supports rapid phylogenetic and morphological diversification of crown birds after the K-Pg mass extinction.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,114(30),8047-8052.
MLA	Ksepka, Daniel T.,et al."Early Paleocene landbird supports rapid phylogenetic and morphological diversification of crown birds after the K-Pg mass extinction".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 114.30(2017):8047-8052.

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