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By: Norman, David BType: ArticleIn: PalaeontologyVolume: 35Series:Issue:Date: 1992Page Range: 247--256Publication Info: London, Palaeontological Association, 1957-Subjects:
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By: Taylor, Michael A. - Norman, David B - Cruickshank, ArthurType: ArticleIn: PalaeontologyVolume: 36Series:Issue:Date: 1993Page Range: 357--360Publication Info: London, Palaeontological Association, 1957-Subjects: