NIGPAS OpenIR  > 中国科学院南京地质古生物研究所
Cellular preservation of musculoskeletal specializations in the Cretaceous bird Confuciusornis
Jiang, BY; Zhao, T; Regnault, S; Edwards, NP; Kohn, SC; Li, ZH; Wogelius, RA; Benton, MJ; Hutchinson, JR

The hindlimb of theropod dinosaurs changed appreciably in the lineage leading to extant birds, becoming more 'crouched' in association with changes to body shape and gait dynamics. This postural evolution included anatomical changes of the foot and ankle, altering the moment arms and control of the muscles that manipulated the tarsometatarsus and digits, but the timing of these changes is unknown. Here, we report cellular-level preservation of tendon- and cartilage-like tissues from the lower hindlimb of Early Cretaceous Confuciusornis. The digital flexor tendons passed through cartilages, cartilaginous cristae and ridges on the plantar side of the distal tibiotarsus and proximal tarsometatarsus, as in extant birds. In particular, fibrocartilaginous and cartilaginous structures on the plantar surface of the ankle joint of Confuciusornis may indicate a more crouched hindlimb posture. Recognition of these specialized soft tissues in Confuciusornis is enabled by our combination of imaging and chemical analyses applied to an exceptionally preserved fossil.

Indexed BySCI
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000397160300001
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Document Type期刊论文
Affiliation1.Nanjing Univ, Sch Earth Sci & Engn, Nanjing 210023, Jiangsu, Peoples R China;
2.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol, Nanjing 210008, Jiangsu, Peoples R China;
3.Univ London, Royal Vet Coll, Dept Comparat Biomed Sci, Struct & Mot Lab, Hatfield AL9 7TA, Herts, England;
4.Univ Manchester, Sch Earth & Environm Sci, Manchester M13 9PL, Lancs, England;
5.Univ Bristol, Sch Earth Sci, Bristol BS8 1TH, Avon, England;
6.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing 100044, Peoples R China
Recommended Citation
GB/T 7714
Jiang, BY,Zhao, T,Regnault, S,et al. Cellular preservation of musculoskeletal specializations in the Cretaceous bird Confuciusornis[J]. NATURE COMMUNICATIONS,2017,8:14779.
APA Jiang, BY.,Zhao, T.,Regnault, S.,Edwards, NP.,Kohn, SC.,...&Hutchinson, JR.(2017).Cellular preservation of musculoskeletal specializations in the Cretaceous bird Confuciusornis.NATURE COMMUNICATIONS,8,14779.
MLA Jiang, BY,et al."Cellular preservation of musculoskeletal specializations in the Cretaceous bird Confuciusornis".NATURE COMMUNICATIONS 8(2017):14779.
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