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Home > Art, Film & Photography > Basal Aves: Jeholornis, Zhongornis, Hulsanpes, Jixiangornis, Shanweiniao, Zhongjianornis, Dalianraptor
Basal Aves: Jeholornis, Zhongornis, Hulsanpes, Jixiangornis, Shanweiniao, Zhongjianornis, Dalianraptor

Basal Aves: Jeholornis, Zhongornis, Hulsanpes, Jixiangornis, Shanweiniao, Zhongjianornis, Dalianraptor


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About the Book

Chapters: Jeholornis, Zhongornis, Hulsanpes, Jixiangornis, Shanweiniao, Zhongjianornis, Dalianraptor. Source: Wikipedia. Pages: 26. Not illustrated. Free updates online. Purchase includes a free trial membership in the publisher's book club where you can select from more than a million books without charge. Excerpt: Jeholornis (meaning "Jehol bird") is a genus of Mesozoic bird that lived approximately 120 million years ago during the Early Cretaceous of China. Fossils of Jeholornis were discovered in the Jiufotang Formation in Hebei Province, China (in what was previously Rehe Province, also known as Jeholhence the name). After Archaeopteryx and possibly Rahonavis, Jeholornis is the most primitive known bird. Jeholornis had a long tail and a few small teeth, and was approximately the size of a turkey, making it one of the largest birds known until the Late Cretaceous. Size comparisonJeholornis was a relatively large, primitive bird, with a total length of up to 80 cm (2.6 ft). The skeleton was generally similar to Archaeopteryx, with a few key differences. The jaws were shorter and stouter, possibly an adaptation for eating seeds. Unlike Archaeopteryx, Jeholornis lacked teeth in the upper jaw, and had only three small teeth in the lower jaw. The arms were robust and longer than the legs, with a relatively well-developed shoulder girdle indicating strong wing musculature. The fingers were short compared to Archaeopteryx and also robust. The claw on the second toe was large, and the second toe bones in general were wider than the other, similar to the famous 'sickle claws' of dromaeosaurids. The tail structure was more like that of a dromaeosaurid than Archaeopteryx with more strongly interlocking vertebrae, and though they had a similar number of tail vertebrae (between 20 and 24) the tail of Jeholornis was much longer overall than that of Archaeopteryx. Feather traces from the wing have only been identified in one specimen, ...More: http: //booksllc.net/?id=45903


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Product Details
  • ISBN-13: 9781157487104
  • Publisher: Books LLC
  • Publisher Imprint: Books LLC
  • Height: 152 mm
  • No of Pages: 28
  • Spine Width: 2 mm
  • Weight: 54 gr
  • ISBN-10: 1157487106
  • Publisher Date: 15 Sep 2010
  • Binding: Paperback
  • Language: English
  • Returnable: N
  • Sub Title: Jeholornis, Zhongornis, Hulsanpes, Jixiangornis, Shanweiniao, Zhongjianornis, Dalianraptor
  • Width: 229 mm


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