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By: Roberts, JohnType: ArticleIn: PalaeontologyVolume: 19Series:Issue:Date: 1976Page Range: 17--77Publication Info: London, Palaeontological Association, 1957-Subjects:
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By: Roberts, JohnType: ArticleIn: PalaeontologyVolume: 8Series:Issue:Date: 1965Page Range: 54--81Publication Info: London, Palaeontological Association, 1957-Subjects:
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By: Roberts, JohnType: ArticleIn: PalaeontologyVolume: 11Series:Issue:Date: 1968Page Range: 389--405Publication Info: London, Palaeontological Association, 1957-Subjects: