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By: Pickerill, R. K. - Brenchley, P. J. (Patrick J.),Type: ArticleIn: PalaeontologyVolume: 22Series:Issue:Date: 1979Page Range: 229--264Publication Info: London, Palaeontological Association, 1957-Subjects:
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By: Brenchley, P. J. (Patrick J.), - Cocks, L R MType: ArticleIn: PalaeontologyVolume: 25Series:Issue:Date: 1982Page Range: 783--815Publication Info: London, Palaeontological Association, 1957-Subjects: