NIGPAS OpenIR
Archaeorhynchus preserving significant soft tissue including probable fossilized lungs
Wang, Xiaoli1,2; O'Connor, Jingmai K.3,4; Maina, John N.5; Pan, Yanhong (泮燕红)6; Wang, Min3,4; Wang, Yan1,2; Zheng, Xiaoting1,2; Zhou, Zhonghe3,4
2018-11-06
Source PublicationPROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
ISSN0027-8424
Volume115Issue:45Pages:11555-11560
Abstract

We describe a specimen of the basal ornithuromorph Archaeorhynchus spathula from the Lower Cretaceous Jiufotang Formation with extensive soft tissue preservation. Although it is the fifth specimen to be described, unlike the others it preserves significant traces of the plumage, revealing a pintail morphology previously unrecognized among Mesozoic birds, but common in extant neornithines. In addition, this specimen preserves the probable remnants of the paired lungs, an identification supported by topographical and macro- and microscopic anatomical observations. The preserved morphology reveals a lung very similar to that of living birds. It indicates that pulmonary specializations such as exceedingly subdivided parenchyma that allow birds to achieve the oxygen acquisition capacity necessary to support powered flight were present in ornithuromorph birds 120 Mya. Among extant air breathing vertebrates, birds have structurally the most complex and functionally the most efficient respiratory system, which facilitates their highly energetically demanding form of locomotion, even in extremely oxygen-poor environments. Archaeorhynchus is commonly resolved as the most basal known ornithuromorph bird, capturing a stage of avian evolution in which skeletal indicators of respiration remain primitive yet the lung microstructure appears modern. This adds to growing evidence that many physiological modifications of soft tissue systems (e.g., digestive system and respiratory system) that characterize living birds and are key to their current success may have preceded the evolution of obvious skeletal adaptations traditionally tracked through the fossil record.

KeywordAves Ornithuromorpha Respiration Lungs Jehol
DOI10.1073/pnas.1805803115
Language英语
WOS KeywordAvian Respiratory System ; Unidirectional Air-flow ; Blood-gas Barrier ; Basal Ornithuromorph ; Theropod Dinosaurs ; Early Birds ; Evolution ; Feathers ; China ; Preservation
Funding ProjectNational Natural Science Foundation of China[41688103] ; National Natural Science Foundation of China[41472023] ; National Natural Science Foundation of China[41372014] ; National Natural Science Foundation of China[41402017] ; Chinese Academy of Sciences[153111] ; National Research Foundation of South Africa ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB26000000]
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000449459000069
Funding OrganizationNational Natural Science Foundation of China ; Chinese Academy of Sciences ; National Research Foundation of South Africa ; Strategic Priority Research Program of Chinese Academy of Sciences
PublisherNATL ACAD SCIENCES
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/16292
Collection中国科学院南京地质古生物研究所
其他
Corresponding AuthorO'Connor, Jingmai K.; Zhou, Zhonghe
Affiliation1.Linyi Univ, Inst Geol & Paleontol, Linyi 276000, Shandong, Peoples R China
2.Shandong Tianyu Museum Nat, Pingyi 273300, Shandong, Peoples R China
3.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing 10010, Peoples R China
4.CAS Ctr Excellence Life & Paleoenvironm, Beijing 10010, Peoples R China
5.Univ Johannesburg, Dept Zool, ZA-2006 Johannesburg, South Africa
6.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, Key Lab Econ Stratig & Palaeogeog, Nanjing 21008, Jiangsu, Peoples R China
Recommended Citation
GB/T 7714
Wang, Xiaoli,O'Connor, Jingmai K.,Maina, John N.,et al. Archaeorhynchus preserving significant soft tissue including probable fossilized lungs[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2018,115(45):11555-11560.
APA Wang, Xiaoli.,O'Connor, Jingmai K..,Maina, John N..,Pan, Yanhong .,Wang, Min.,...&Zhou, Zhonghe.(2018).Archaeorhynchus preserving significant soft tissue including probable fossilized lungs.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,115(45),11555-11560.
MLA Wang, Xiaoli,et al."Archaeorhynchus preserving significant soft tissue including probable fossilized lungs".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 115.45(2018):11555-11560.
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