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Grabauornis, new bird (Enantiornithes) from Early Cretaceous of China
A new paper:
Johan DALSÄTT, Per G.P. ERICSON and Zhonge ZHOU (2014)
A New Enantiornithes (Aves) from the Early Cretaceous of China.
Acta Geologica Sinica - English Edition 88(4): 1034–1040
A new bird from the early Cretaceous Yixian Formation of Liaoning,
China is described. This new species, Grabauornis lingyuanensis,
shares several synapomorphies with the Enantiornithes. The specimen is
relatively well preserved. The skeletal morphology of Grabauornis
bears close resemblance to that of other Chinese members of this
clade. The brachial index (the ratio between the lengths of humerus
and ulna) is 0.95, which is close to the average for enantiornithine
birds. It indicates that Grabauornis was a rather good flyer, and the
presence of an alula in the wing further testifies to this.
NOTE: This paper has not been posted yet on the Chinese open-access link.