Anatomy of the primitive birdSapeornis chaoyangensisfrom the Early Cretaceous of Liaoning, China

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A long-tailed, seed-eating bird from the Early Cretaceous of China.

Zhonghe Zhou, Fucheng Zhang (2002)

The lacustrine deposits of the Yixian and Jiufotang Formations in the Early Cretaceous Jehol Group in the western Liaoning area of northeast China are well known for preserving feathered dinosaurs, primitive birds and mammals. Here we report a large basal bird, Jeholornis prima gen. et sp. nov., from the Jiufotang Formation. This bird is distinctively different from other known birds of the Early Cretaceous period in retaining a long skeletal tail with unexpected elongated prezygopophyses and chevrons, resembling that of dromaeosaurids, providing a further link between birds and non-avian theropods. Despite its basal position in early avian evolution, the advanced features of the pectoral girdle and the carpal trochlea of the carpometacarpus of Jeholornis indicate the capability of powerful flight. The dozens of beautifully preserved ovules of unknown plant taxa in the stomach represents direct evidence for seed-eating adaptation in birds of the Mesozoic era.

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An Early Cretaceous bird from Spain and its implications for the evolution of avian flight

José L Sanz, Luis M. Chiappe, Bernardino P. Pérez-Moreno … (1996)

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A beaked bird from the Jurassic of China

Lian-Hai Hou, Zhonghe Zhou, Larry D. Martin … (1995)

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Author and article information

Journal

Title: Canadian Journal of Earth Sciences

Abbreviated Title: Can. J. Earth Sci.

Publisher: Canadian Science Publishing

ISSN (Print): 0008-4077

ISSN (Electronic): 1480-3313

Publication date Created: May 2003

Publication date (Print): May 2003

Volume: 40

Issue: 5

Pages: 731-747

Article

DOI: 10.1139/e03-011

SO-VID: dbd125ab-6652-445a-bdd9-aaa2ea140453

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