Chinese Science Bulletin

, Volume 46, Issue 15, pp 1258–1264 | Cite as

Two new ornithurine birds from the Early Cretaceous of western Liaoning, China

  • Zhonghe Zhou
  • Fucheng Zhang
Paper

Abstract

We describe two new ornithurine birds from the Early Cretaceous Jiufotang Formation of western Liaoning, northeast China:Yanornis martini gen. et sp. nov. andYixianornis grabaui gen. et sp. nov. They represent the best fossil record of ornithurine birds known from the Early Cretaceous. They are more advanced than the most primitive ornithurineLiaoningornis, and are more similar to the other two Chinese Early Cretaceous ornithurinesChaoyangia andSonglingornis. Compared withConfuciusornis, Liaoxiornis andEoenantiornis from the same age, the two new birds show remarkable advanced characteristics and suggest the presence of powerful flight capability like modern birds. Compared withYixianornis andChaoyangia, Yanornis is larger, with a more elongated skull and relatively long wings. The new discoveries indicate that by the Early Cretaceous both enantiornithine and ornithurine birds had already radiated significantly. The flight structures ofYanornis andYixianornis are hardly distinguishable from those of modern birds; however, both retain a few primitive traits such as teeth on the jaws, wing claws and pubic symphysis, which exclude them from being the most recent ancestor of all extant birds.

Keywords

Ornithurae origin radiation Jiufotang Formation Yanornis Yixianornis 

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References

  1. 1.
    Sereno, P. C., Rao, C. -G., Early Evolution of Avian Flight and Perching: New Evidence from the Lower Cretaceous of China. Science, 1992, 255: 845.CrossRefGoogle Scholar
  2. 2.
    Zhou, Z. F., Jin, F., Zhang, J., Preliminary report on a Mesozoic bird from Liaoning, China, Chinese Sci. Bull. (in Chinese), 1992, 37(16): 1365.Google Scholar
  3. 3.
    Zhou, Z., Discovery of a new enantiornithine bird from the Early Cretaceous of Liaoning, China, Vert PalAsiat (in Chinese), 1995, 33(2): 99.Google Scholar
  4. 4.
    Hou, L. H., Chen, P. J.,Liaoxiornis delicatus gen. et sp. nov., the smallest Mesozoic bird, Chinese Sci. Bull., 1999, 44(9): 834.CrossRefGoogle Scholar
  5. 5.
    Hou, L. H., Martin, L. D., Zhou, Z. H. et al.,Archaeopteryx to opposite birds-missing link from the Mesozoic of China, Vert PalAsiat (in Chinese), 1999, 37(2): 88.Google Scholar
  6. 6.
    Zhang, F., Zhou, Z., A primitive enantiornithine bird and the origin of feathers, Science, 2000, 290: 1955.CrossRefGoogle Scholar
  7. 7.
    Zhang, F., Zhou, Z., Hou, L. et al., Early radiation of birds—evidence from a new enantiornithine, Chinese Sci. Bull. (in Chinese), 2000, 45(24): 2650.Google Scholar
  8. 8.
    Hou, L., Liu, Z., A new fossil bird from Lower Cretaceous of Gansu and early evolution of birds, Sci. Sin. Ser. B, 1984, 27(12): 1296.Google Scholar
  9. 9.
    Hou, L., Zhang, J., A new fossil bird from Lower Cretaceous of China, Vert PalAsiat (in Chinese), 1993, 31(3): 217.Google Scholar
  10. 10.
    Hou, L., Martin, L. D., Zhou, Z. et al., Early adaptation of birds-evidence from fossils from Northeastern China, Science, 1996, 27(5290): 1164.CrossRefGoogle Scholar
  11. 11.
    Hou, L., Mesozoic birds of China, Nantou: Feng-Huang-Ku Bird Park of Taiwan Provincial Government (in Chinese), 1997, 1–228.Google Scholar
  12. 12.
    Feduccia, A., The Origin and Evolution of Birds, New Haven: Yale Univ. Press, 1999, 1–466.Google Scholar
  13. 13.
    Kurochkin, E. N., A true carinate bird from Lower Cretaceous deposits in Mongolia and other evidence of Early Cretaceous birds in Asia, Cretaceous Research, 1985, 6: 271.CrossRefGoogle Scholar
  14. 14.
    Xu, X., Zhou, Z., Wang, X., The smallest known non-avian theropod dinosaur, Nature, 2000, 408: 705.CrossRefGoogle Scholar
  15. 15.
    Zhou, Z., Hou, L.,Confuciusornis and the early evolution of birds, Vert PalAsiat (in Chinese), 1998, 36(2): 136.Google Scholar

Copyright information

© Science in China Press 2001

Authors and Affiliations

  • Zhonghe Zhou
    • 1
  • Fucheng Zhang
    • 1
  1. 1.Institute of Vertebrate Paleontology and PaleoanthropologyChinese Academy of SciencesBeijingChina

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