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Longipteryx (Enantiornithes), new specimen with crenulated teeth

Ben Creisler

A new paper:

Xuri Wang, Bo Zhao, Caizhi Shen, Sizhao Liu, Chunling Gao, Xiaodong
Cheng & Fengjiao Zhang (2015)
New material of Longipteryx (Aves: Enantiornithes) from the Lower
Cretaceous Yixian Formation of China with the first recognized avian
tooth crenulations.
Zootaxa 3941 (4): 565–578
doi:  http://dx.doi.org/10.11646/zootaxa.3941.4.5
pdf preview

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.