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By: Baarli, B. Gudveig,Type: ArticleIn: PalaeontologyVolume: 29Series:Issue:Date: 1986Page Range: 187--205Publication Info: London, Palaeontological Association, 1957-Subjects:
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By: Baarli, B. Gudveig,Type: ArticleIn: PalaeontologyVolume: 31Series:Issue:Date: 1988Page Range: 1101--1129Publication Info: London, Palaeontological Association, 1957-Subjects: