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By: Walmsley, Victor G.Type: ArticleIn: PalaeontologyVolume: 8Series:Issue:Date: 1965Page Range: 454--477Publication Info: London, Palaeontological Association, 1957-Subjects:
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By: Walmsley, Victor G. - Boucot, A. J. (Arthur James),Type: ArticleIn: PalaeontologyVolume: 14Series:Issue:Date: 1971Page Range: 487--531Publication Info: London, Palaeontological Association, 1957-Subjects:
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By: Walmsley, Victor G. - Boucot, A. J. (Arthur James), - Harper, C W - Savage, Norman M.Type: ArticleIn: PalaeontologyVolume: 11Series:Issue:Date: 1968Page Range: 306--316Publication Info: London, Palaeontological Association, 1957-Subjects: