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By: Pollard, John EType: ArticleIn: PalaeontologyVolume: 9Series:Issue:Date: 1966Page Range: 667--697Publication Info: London, Palaeontological Association, 1957-Subjects:
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By: Pollard, John EType: ArticleIn: PalaeontologyVolume: 11Series:Issue:Date: 1968Page Range: 376--388Publication Info: London, Palaeontological Association, 1957-Subjects:
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By: Pollard, John EType: ArticleIn: PalaeontologyVolume: 24Series:Issue:Date: 1981Page Range: 555--588Publication Info: London, Palaeontological Association, 1957-Subjects: