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By: Evans, David H - King, Andrew HType: ArticleIn: PalaeontologyVolume: 33Series:Issue:Date: 1990Page Range: 623--630Publication Info: London, Palaeontological Association, 1957-Subjects:
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By: King, Andrew HType: ArticleIn: PalaeontologyVolume: 41Series:Issue:Date: 1998Page Range: 335--347Publication Info: London, Palaeontological Association, 1957-Subjects: