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By: Hughes, Norman F - Drewry, Gillian E - Laing, John FType: ArticleIn: PalaeontologyVolume: 22Series:Issue:Date: 1979Page Range: 513--535Publication Info: London, Palaeontological Association, 1957-Subjects:
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By: Laing, John FType: ArticleIn: PalaeontologyVolume: 18Series:Issue:Date: 1975Page Range: 775--808Publication Info: London, Palaeontological Association, 1957-Subjects:
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By: Laing, John FType: ArticleIn: PalaeontologyVolume: 17Series:Issue:Date: 1974Page Range: 435--436Publication Info: London, Palaeontological Association, 1957-Subjects: