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Rhinorex
''Rhinorex'' is a genus of kritosaurin hadrosaur from the Late Cretaceous Neslen Formation, in central Utah. Its exact placement in time is uncertain, though it probably dates to 75 million years ago and was discovered in estuarine sediments.〔(T.A. Gates & R. Scheetz (2014): A new saurolophine hadrosaurid (Dinosauria: Ornithopoda) from the Campanian of Utah, North America ) Journal of Systematic Paleontology. doi: 10.1080/14772019.2014.950614〕
It is likely a close relative of ''Gryposaurus'', and indeed some have suggested that it falls within the genus ''Gryposaurus'', as the phylogenetic analysis indicates.〔
It is found in a very similar time and place as ''Gryposaurus monumentensis'' and ''Gryposaurus'' sp. This would challenge the idea of provincialism in Late Cretaceous Laramidian faunas. It may be that ''Rhinorex'' lived in more coastal environments than ''Gryposaurus''.〔 The holotype specimen BYU 13258 is composed of a partial but mostly articulated skeleton, which includes the skull, the vertebral column and a partial pelvis.
==Etymology==
The type and only valid species known is ''Rhinorex condrupus''. The specific name is derived from the Latin word "condo" which means "bury" and refers to the specimen being buried in rock and the Latin word "rupes" which means "cliffs" and is a reference to the fossil being discovered in the Book Cliffs of Utah.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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