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Acer douglasense : ウィキペディア英語版 | Acer douglasense
''Acer douglasense'' is an extinct maple species in the family Sapindaceae described from fossil leaves. The species is solely known from the Early Eocene sediments exposed in Katmai National Park and Preserve, Kodiak Island Borough, Alaska. It is the type species for the extinct section ''Douglasa''.〔 ==Type locality== The species was described from a group of leaf specimens found in the West Foreland Formation which is part of the Kenai Group. Sediments of the formation span are typically volcanoclastic sedimentary rocks dating from the Late Paleocene to early Eocene with ''A. douglasense'' only found in the Eocene age section.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Acer douglasense」の詳細全文を読む
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