中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 古脊椎动物与古人类研究所
  3. 中国科学院古脊椎动物与古人类研究所
  4. 图书馆1
Heterochronic truncation of odontogenesis in theropod dinosaurs provides insight into the macroevolution of avian beaks

文献类型：期刊论文

作者Wang, Shuo1,2; Stiegler, Josef3; Wu, Ping4; Chuong, Cheng-Ming4; Hu, Dongyu5; Balanoff, Amy6; Zhou, Yachun7,8; Xu, Xing7
刊名PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
出版日期2017-10-10
卷号114期号:41页码:10930-10935
关键词Ontogenetic Edentulism Beak Evolution Tooth Reduction Caenagnathidae Sapeornis
DOI10.1073/pnas.1708023114
文献子类Article
英文摘要Beaks are innovative structures characterizing numerous tetrapod lineages, including birds, but little is known about how developmental processes influenced the macroevolution of these important structures. Here we provide evidence of ontogenetic vestigialization of alveoli in two lineages of theropod dinosaurs and show that these are transitional phenotypes in the evolution of beaks. One of the smallest known caenagnathid oviraptorosaurs and a small specimen of the Early Cretaceous bird Sapeornis both possess shallow, empty vestiges of dentary alveoli. In both individuals, the system of vestiges connects via foramina with a dorsally closed canal homologous to alveoli. Similar morphologies are present in Limusaurus, a beaked theropod that becomes edentulous during ontogeny; and an analysis of neontological and paleontological evidence shows that ontogenetic reduction of the dentition is a relatively common phenomenon in vertebrate evolution. Based on these lines of evidence, we propose that progressively earlier postnatal and embryonic truncation of odontogenesis corresponds with expansion of rostral keratin associated with the caruncle, and these progenesis and peramorphosis heterochronies combine to drive the evolution of edentulous beaks in nonavian theropods and birds. Following initial apomorphic expansion of rostral keratinized epithelia in perinatal toothed theropods, beaks appear to inhibit odontogenesis as they grow postnatally, resulting in a sequence of common morphologies. This sequence is shifted earlier in development through phylogeny until dentition is absent at hatching, and odontogenesis is inhibited by beak formation in ovo.
WOS关键词ALLIGATOR-MISSISSIPPIENSIS ; EVOLUTION ; TEETH ; OVIRAPTOROSAURIA ; MORPHOLOGY ; DENTITION ; CHINA ; ACIPENSERIFORMES ; TOOTHLESSNESS ; CHARACTERS
WOS研究方向Science & Technology - Other Topics
语种英语
WOS记录号WOS:000412653900059
资助机构National Natural Science Foundation of China(41602013 ; Youth Innovative Research Team Project of Capital Normal University ; State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences(173125) ; U.S. National Science Foundation(NSF EAR 0310217 ; National Institutes of Health(AR47364 ; National Science Foundation(NSF DEB 1457181) ; 41688103 ; 0228559) ; AR60306) ; 41120124002 ; 41172026)
源URL[http://124.16.247.212/handle/311034/8033]  
专题古脊椎动物与古人类研究所_图书馆1
作者单位1.Capital Normal Univ, Coll Life Sci, Lab Vertebrate Evolut, Beijing 100048, Peoples R China
2.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Jiangsu, Peoples R China
3.George Washington Univ, Dept Biol Sci, Washington, DC 20052 USA
4.Univ Southern Calif, Keck Sch Med, Dept Pathol, Los Angeles, CA 90033 USA
5.Shenyang Normal Univ, Key Lab Evolut Life Northeast Asia, Paleontol Museum Liaoning, Minist Land & Resources,Paleontol Inst, Shenyang 110034, Liaoning, Peoples R China
6.Johns Hopkins Univ, Ctr Funct Anat & Evolut, Baltimore, MD 21205 USA
7.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origin, Beijing 100044, Peoples R China
8.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Shuo,Stiegler, Josef,Wu, Ping,et al. Heterochronic truncation of odontogenesis in theropod dinosaurs provides insight into the macroevolution of avian beaks[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2017,114(41):10930-10935.
APA Wang, Shuo.,Stiegler, Josef.,Wu, Ping.,Chuong, Cheng-Ming.,Hu, Dongyu.,...&Xu, Xing.(2017).Heterochronic truncation of odontogenesis in theropod dinosaurs provides insight into the macroevolution of avian beaks.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,114(41),10930-10935.
MLA Wang, Shuo,et al."Heterochronic truncation of odontogenesis in theropod dinosaurs provides insight into the macroevolution of avian beaks".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 114.41(2017):10930-10935.

入库方式： OAI收割

来源：古脊椎动物与古人类研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。