Dinosaur ossification centres in embryonic birds uncover developmental evolution of the skull

doi:10.1038/s41559-018-0713-1

	Dinosaur ossification centres in embryonic birds uncover developmental evolution of the skull
	Smith-Paredes, Daniel 1,3; Nunez-Leon, Daniel 1,4; Soto-Acuna, Sergio 1; O'Connor, Jingmai 2; Botelho, Joao Francisco 1; Vargas, Alexander O.1
刊名	NATURE ECOLOGY & EVOLUTION
	2018-12-01
卷号	2 期号:12 页码:1966-1973
ISSN号	2397-334X
DOI	10.1038/s41559-018-0713-1
通讯作者	Smith-Paredes, Daniel(dsmithparedes@yale.edu) ; Vargas, Alexander O.(alexvargas@uchile.cl)
英文摘要	Radical transformation of the skull characterizes bird evolution. An increase in the relative size of the brain and eyes was presumably related to the loss of two bones surrounding the eye, the prefrontal and postorbital. We report that ossification centres of the prefrontal and postorbital are still formed in bird embryos, which then fuse seamlessly to the developing nasal and frontal bones, respectively, becoming undetectable in the adult. The presence of a dinosaur-like ossification pattern in bird embryos is more than a trace of their evolutionary past: we show how persistent modularity of ossification centres has allowed for evolutionary re-organization of skull architecture in evolution. Our findings also demonstrate that enigmatic mesodermal cells forming the posterior region of the avian frontal correspond to the ossification centre of the postorbital, not the parietal, and link its failure to develop into an adult bone to its incorporation into the expanded braincase of birds.
资助项目	Conicyt, Government of Chile[Anillo ACT172099] ; Conicyt, Government of Chile[Fondecyt 1150906]
WOS关键词	NEURAL CREST ; CRANIAL ANATOMY ; SKELETON ; THEROPODA ; SPECIMEN ; SEQUENCE ; INSIGHTS ; REPTILES ; CELLS ; BONE
WOS研究方向	Environmental Sciences & Ecology ; Evolutionary Biology
语种	英语
出版者	NATURE PUBLISHING GROUP
WOS记录号	WOS:000450904100024
资助机构	Conicyt, Government of Chile
内容类型	期刊论文
源URL	[http://119.78.100.205/handle/311034/9167]
专题	中国科学院古脊椎动物与古人类研究所
通讯作者	Smith-Paredes, Daniel; Vargas, Alexander O.
作者单位	1.Univ Chile, Fac Ciencias, Dept Biol, Lab Ontogenia & Filogenia, Santiago, Chile 2.Inst Vertebrate Paleontol & Paleoanthropol, Beijing, Peoples R China 3.Yale Univ, Dept Geol & Geophys, New Haven, CT 06520 USA 4.Univ Zurich, Palaontol Inst & Museum, Zurich, Switzerland
推荐引用方式 GB/T 7714	Smith-Paredes, Daniel,Nunez-Leon, Daniel,Soto-Acuna, Sergio,et al. Dinosaur ossification centres in embryonic birds uncover developmental evolution of the skull[J]. NATURE ECOLOGY & EVOLUTION,2018,2(12):1966-1973.
APA	Smith-Paredes, Daniel,Nunez-Leon, Daniel,Soto-Acuna, Sergio,O'Connor, Jingmai,Botelho, Joao Francisco,&Vargas, Alexander O..(2018).Dinosaur ossification centres in embryonic birds uncover developmental evolution of the skull.NATURE ECOLOGY & EVOLUTION,2(12),1966-1973.
MLA	Smith-Paredes, Daniel,et al."Dinosaur ossification centres in embryonic birds uncover developmental evolution of the skull".NATURE ECOLOGY & EVOLUTION 2.12(2018):1966-1973.