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By: Stridsberg, SvenType: ArticleIn: PalaeontologyVolume: 33Series:Issue:Date: 1990Page Range: 243--248Publication Info: London, Palaeontological Association, 1957-Subjects:
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By: Stridsberg, SvenType: ArticleIn: PalaeontologyVolume: 31Series:Issue:Date: 1988Page Range: 651--663Publication Info: London, Palaeontological Association, 1957-Subjects: