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Rinchenia
''Rinchenia'' is a genus of Mongolian oviraptorid dinosaur from the late Cretaceous Period. The type (and only known) species, ''Rinchenia mongoliensis'', was originally classified as a species within the genus ''Oviraptor'' (named ''Oviraptor mongoliensis'' by Rinchen Barsbold in 1986〔Barsbold, R. (1986). "Raubdinosaurier Oviraptoren" (Russian ). In: O.I. Vorob’eva (ed.), ''Gerpetologičeskie issledovaniâ v Mongol’skoj Narod−noj Respublike'', 210–223. Institut èvolûcionnoj morfologii i èkologii životnyh im. A.N. Severcova, Akademiâ nauk SSSR, Moscow.〕), but a re-examination by Barsbold in 1997 found differences significant enough to warrant a separate genus.〔Barsbold, R. (1997). "Oviraptorosauria." In: P.J. Currie and K. Padian (eds.), ''Encyclopedia of Dinosaurs'', 505–509. Academic Press, San Diego.〕 The name ''Rinchenia'' was coined for this new genus by Barsbold in 1997, though he did not describe it in detail, and the name remained a ''nomen nudum'' until used by Osmólska ''et al.'' in 2004.〔Osmólska, H., Currie, P. J., and Barsbold, R. (2004). "Oviraptorosauria." In: Weishampel, D.B., Dodson, P., and Osmólska, H. (eds.), ''The Dinosauria, Second Edition''. California University Press, 165-183.〕 ''Rinchenia'' is known from a single specimen (GI 100/32A) consisting of a complete skull and lower jaw, partial vertebral column, partial forelimbs and shoulder girdle, partial hind limbs and pelvis, and a furcula ("wishbone"). While ''Rinchenia'' was about the same size as ''Oviraptor'' (about 1.5 meters, or 5 ft long), several features of its skeleton, especially in the skull, show it to be distinct. Its skeleton was more lightly built and less robust than that of ''Oviraptor'', and while the crest of ''Oviraptor'' is indistinct because of poor fossil preservation, ''Rinchenia'' had a well-preserved, highly developed, dome-like casque which incorporated many bones in the skull that are free of the crest in ''Oviraptor''. ==See also==
* Timeline of oviraptorosaur research
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