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By: Osborn, Dale J., - Helmy, Ibrahim.Edition:Publication info: [Chicago], Field Museum of Natural History, 1980Volume: n.s. no.5 (1980)Series:Holding Institution: University Library, University of Illinois Urbana ChampaignSubjects:BHL Collections:
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By: Osborn, Dale J.,Type: ArticleIn: BulletinVolume: 39Series:Issue: 3Date: 1968Page Range: 2--14Publication Info: [Chicago], The Museum, 1966-1972Subjects:
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By: Osborn, Dale J.,Type: ArticleIn: Field Museum of Natural History bulletinVolume: 48Series:Issue: 9Date: 1977Page Range: 10--13Publication Info: [Chicago, Ill.], The Museum, [1972]-©1990Subjects: