Synsacrum of a primitive bird from the Upper Cretaceous of Uzbekistan
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- Zelenkov, N.V. & Averianov, A.O. Paleontol. J. (2011) 45: 314. doi:10.1134/S0031030111030166
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A partial synsacrum of a primitive bird from the Zenge Kurgan 3 locality in the Kyzyl Kum Desert (Uzbekistan) is described. The vertebrate fauna from this locality is similar to that of the Bissekty Formation of the Dzharakuduk locality (Central Kyzyl Kum, Uzbekistan); however, this synsacrum differs considerably from all other synsacra from Dzharakuduk. The taxonomic position of this bird remains uncertain; it is most similar to some Enantiornithes, although it could have belonged to a primitive ornithuromorph bird. The functional significance of structural differences in the synsacrum of ornithurine and enantiornithine birds is discussed.