[an error occurred while processing this directive] ������� 2017, 36(3) 655-662 DOI:   10.3969/j.issn.1004-5589.2017.03.001  ISSN: 1004-5589 CN: 22-1111/P

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Article by Wei Z
Article by Li L
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Discovery of a new enantiornithine bird from Lower Cretaceous of western Liaoning, China
WEI Zhao-ying, LI Li
College of Paleontology, Shenyang Normal University, Shenyang 110034, China
Abstract: A new enantiornithine bird from Early Cretaceous Jiufotang Formation in Chaoyang of western Liaoning is described. This new small-sized bird shows several enantiornithine synapomorphies. Based on the morphological features of the hindlimb, this new specimen represents an arboreal enantiornithine bird. It has developmental forelimb and progressive coracoid, as well as lagging hindlimb and relatively primitive sternum morphology. The ratio of the length to the width of the sternum is approximately 1. Rostral margin of the sternum is rounded, the distal end of the outermost trabecula of the sternum is not expanded, and the distal end of the caudal trabecula is slightly expanded, with the keel of sternum absent. Its skeleton displays a mosaic of both primitive and derived characters, as well as the primitive sternum features. Its synthetic characters is distinguishable from other known small-sized enantiornithines, therefore this specimen represents a new genus and species:Microenantiornis vulgaris gen. et sp. nov.
Keywords: enantiornithines   Early Cretaceous   Jiufotang Formation   Chaoyang   western Liaoning  
�ո����� 2017-03-31 �޻����� 2017-04-10 ����淢������  
DOI: 10.3969/j.issn.1004-5589.2017.03.001
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