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By: Lister, T R - Downie, CType: ArticleIn: PalaeontologyVolume: 10Series:Issue:Date: 1967Page Range: 171--174Publication Info: London, Palaeontological Association, 1957-Subjects:
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By: Richardson, J B - Lister, T RType: ArticleIn: PalaeontologyVolume: 12Series:Issue:Date: 1969Page Range: 201--252Publication Info: London, Palaeontological Association, 1957-Subjects: