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By: Dixon, Owen A. - Bolton, Thomas Elwood, - Copper, PaulType: ArticleIn: PalaeontologyVolume: 29Series:Issue:Date: 1986Page Range: 391--413Publication Info: London, Palaeontological Association, 1957-Subjects:
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By: Dixon, Owen A.Type: ArticleIn: PalaeontologyVolume: 13Series:Issue:Date: 1970Page Range: 52--63Publication Info: London, Palaeontological Association, 1957-Subjects: