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By: Sandy, Michael R. - Stanley, George DType: ArticleIn: PalaeontologyVolume: 36Series:Issue:Date: 1993Page Range: 439--480Publication Info: London, Palaeontological Association, 1957-Subjects:
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By: Sandy, Michael R.Type: ArticleIn: Bulletin of the British Museum (Natural History) GeologyVolume: 40Series:Issue:Date: 1986Page Range: 177--196Publication Info: London, BM(NH),Subjects: