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File:Alnus fairii as Betula heteromorpha USNM P36931 img3.jpg

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English: First figured as Betula heteromorpha. Specimen later reidentified as Alnus fairii by Wolfe, 1966 - Knowlton Plate 17 fig 5;

Langhian (Barstovian), Middle Miocene; Coeur d'Alene Florule, Latah Formation; Edwards ranch, Stanley Hill, Coeur d'Alene, Idaho, U.S.A.

Department of Paleobotany, National Museum of Natural History, Smithsonian Institution, Washington, District of Columbia; specimen #P36931; collected by H. J. Rust, July, 1920.
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Source Smithsonian Betula heteromorpha Knowlton USNM P36931
Author Fred Cochard
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