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Issue: Vol. 3941 No. 4: 2 Apr. 2015
Type: Article
Published: 2015-04-02
DOI: 10.11646/zootaxa.3941.4.5
Page range: 565–578
Abstract views: 60
PDF downloaded: 5

New material of Longipteryx (Aves: Enantiornithes) from the Lower Cretaceous Yixian Formation of China with the first recognized avian tooth crenulations

Institute of Geology, Chinese Academy of Geological Sciences; Key Laboratory of Paleontology and Stratigraphy, Ministry of Land and Resources, No. 26 Baiwanzhuang Road, Xicheng District, Beijing, PR China
Dalian Natural History Museum, No. 40 Xicun Street Heishijiao Shahekou District, Dalian City, Liaoning Province, PR China
Dalian Natural History Museum, No. 40 Xicun Street Heishijiao Shahekou District, Dalian City, Liaoning Province, PR China
Dalian Natural History Museum, No. 40 Xicun Street Heishijiao Shahekou District, Dalian City, Liaoning Province, PR China
Dalian Natural History Museum, No. 40 Xicun Street Heishijiao Shahekou District, Dalian City, Liaoning Province, PR China
Dalian Natural History Museum, No. 40 Xicun Street Heishijiao Shahekou District, Dalian City, Liaoning Province, PR China
Enantiornithes Lower Cretaceous Yixian Formation tooth morphology

Abstract

We report on a new specimen of Longipteryx chaoyangensis from the Lower Cretaceous Yixian Formation in Chaoyang, Liaoning Province, China. The new material preserves previously unknown tooth crenulations. This is the first recognized tooth crenulations within Aves. It not only provides new information regarding the anatomy of the Longipteryx, but also sheds new light on the trophic specialization of this genus and even this family. It was discovered from the Yixian Formation, which is older than the Longipteryx chaoyangensis bearing-Jiufotang Formation. This new discovery also expands the known stratigraphic range of Longipteryx.