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By: Brasier, M. D. (Martin David),Type: ArticleIn: PalaeontologyVolume: 19Series:Issue:Date: 1976Page Range: 223--245Publication Info: London, Palaeontological Association, 1957-Subjects:
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By: Brasier, M. D. (Martin David),Type: ArticleIn: PalaeontologyVolume: 18Series:Issue:Date: 1975Page Range: 681--702Publication Info: London, Palaeontological Association, 1957-Subjects: