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Carya washingtonensis
''Carya washingtonensis'' is an extinct species of hickory nut in the walnut family Juglandaceae. The species is solely known from the Miocene sediments exposed in Kittitas County near Ellensburg, Washington.
==Type locality==
The species was described from the three nut specimens,〔 all found at the no longer accessible Badger Pocket-Squaw Creek locality south of Ellensburg which is now part of the Yakima Training Center. This locality is thought to be an extension of the Ginkgo flow basalts notable for the fossils found at Ginkgo Petrified Forest State Park. The Ginkgo Flow, part of the Wanapum basalts is the oldest segment of the Frenchman Springs Member, dating to around 15.6 million years old, or the Langhian stage of the Miocene.〔(Miocene Woods Of Eastern Washington ) Accessed 23 May 2011〕
The nuts were originally discovered as a single silicified,〔 opalized, mass of well over fifty nuts found in a petrified ''Platanus'' species stump.〔 The mass was discovered in the 1940s by Carl Clinesmith but as of 1987 the mass was lost and Steven Manchester presumed it was disaggregated with the individual nuts disseminated to various collections.〔 However it is reported in a 1995 ''Washington Geology'' article by Wesley Wehr the specimen was, at that time, on display at the Burke Museum of Natural History and Culture, part of the University of Washington in Seattle, Washington, USA. At least a portion of the mass is still preserved in the collections at the Burke Museum as specimen number "UWBM38700".〔
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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