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Acer palaeorufinerve
''Acer palaeorufinerve'' is an extinct maple species in the family Sapindaceae described from series of isolated fossil samaras and leaves. The species was described from Miocene to Pliocene aged fossils found in Japan and is known from Korean fossils and Miocene sediments exposed in the state of Alaska, USA. It is one of several extinct species placed in the living section ''Macrantha''.
==History and classification==
''Acer palaeorufinerve'' is represented by a group of fossil specimens from a number of different geologic formations. The first fossils described were recovered from the Pliocene Ningyo-toge Formation in the Tomata District of Japan. Fossils have subsequently been recovered the from the Late Miocene Tatsumitoge Formation in the Tomata District and the Early Miocene Ito-o Formation in the Fukui Prefecture. Other fossils have been included in the species from North Korea and Kamchatka, Russia.〔 A single isolated fossil fruit possibly belonging to ''A. palaeorufinerve'' is known from North America. The specimen was recovered from the latest Early to early Middle Miocene Seldovia Point flora in the Cook Inlet region of Alaska.〔
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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