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By: Pocock, Yvonne PType: ArticleIn: PalaeontologyVolume: 11Series:Issue:Date: 1968Page Range: 64--93Publication Info: London, Palaeontological Association, 1957-Subjects:
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By: Pocock, Yvonne PType: ArticleIn: PalaeontologyVolume: 9Series:Issue:Date: 1966Page Range: 381--412Publication Info: London, Palaeontological Association, 1957-Subjects: