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Sarahsaurus
''Sarahsaurus'' is a genus of basal sauropodomorph dinosaur which lived during the lower Jurassic period in what is now northeastern Arizona, USA.
==Discovery and naming==
''Sarahsaurus'' is known from a nearly complete articulated holotype skeleton referred to as TMM 43646-2, another partial skeleton known as TMM 43646-3, and a nearly complete but poorly preserved skull known as MCZ 8893.〔 This last specimen was previously described and referred to as ''Massospondylus'' sp.
''Sarahsaurus'' was first described by Timothy B. Rowe, Hans-Dieter Sues and Robert R. Reisz in 2011 and the type species is ''Sarahsaurus aurifontanalis''. The generic name honours Sarah Butler, and ''sauros'' (Greek), for "lizard". The specific name is derived from ''aurum'' (Latin), "gold", and ''fontanalis'' (Latin), "of the spring" in reference to Gold Spring, Arizona, where the holotype was found. ''Sarahsaurus'' is the fourth basal sauropodomorph dinosaur to have been identified in North America. (The other three are ''Anchisaurus'' and ''Ammosaurus'' from the Early Jurassic of the Connecticut River Valley, and ''Seitaad'' of the later Navajo Sandstone of Early Jurassic Utah.) It is thought to have appeared through a dispersal event that originated in South America and was separate from those of the other two sauropodomorphs.〔 The animal is notable for possessing very large, powerful hands, suggesting that it was an omnivore.〔http://news.nationalgeographic.com/news/2010/10/101006-new-dinosaur-north-america-science/〕
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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