The First Mesozoic Heterodactyl Bird from China |
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作者姓名: | ZHANG Zihui HOU Lianhai HASEGAWA Yoshikasu Jingmai O'CONNOR Larry D. MARTIN Luis M. CHIAPPE |
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作者单位: | [1]College of Life Sciences, Capital Normal University, Beijing 100037, China [2]Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Science, P.O. Box 643, Beijing 100044, China [3]Gunma Museum of Natural History, 1674-1 Kamiku |
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摘 要: | 1 Introduction Enantiornithines were the dominant birds nearly worldwide throughout the entire span of the Cretaceous (Chiappe, 1995; Feduccia, 1996). The adaptive radiation of opposite birds is little known besides the disparity of rostral morphology in Boluochia (Zhou, 1995), Longipteryx (Zhang et al., 2001), Longirostravis ( Hou et al., 2004), and the presence of stomach contents that reflect a diversity of diets. Like the structure of rostrum, differentiation of the locomotor apparatu…
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关 键 词: | 白垩纪 古生物学 鸟类 中生代 |
收稿时间: | 2005-11-07 |
修稿时间: | 2006-04-29 |
The First Mesozoic Heterodactyl Bird from China |
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Authors: | ZHANG Zihui HOU Lianhai HASEGAWA Yoshikasu Jingmai O'CONNOR Larry DMARTIN Luis MCHIAPPE |
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Abstract: | Dalingheornis liweii gen. et sp. nov., a new enantiornithine bird was collected from the early Cretaceous Yixian Formation in northeastern China. It is the first record of a highly specialized heterodactyl foot in Mesozoic birds. The Y-shaped furcula with short hypocleidum is different from that of other enantiornithines. The minor metacarpal is robust and longer than the major metacarpal. A long bony tail composed of 20 caudal vertebrae with chevrons resembling those of dromaeosaurids and thus, highlighting again the evolutionary relationship between birds and non-avian theropods. Well-preserved alula feathers and a heterodactyl foot provide strong evidence for the arboreal habit of Dalingheornis. |
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Keywords: | Early Cretaceous heterodactyl enantiornithine Dalingheornis liweii China |
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