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By: Nuttall, C PType: ArticleIn: PalaeontologyVolume: 33Series:Issue:Date: 1990Page Range: 707--737Publication Info: London, Palaeontological Association, 1957-Subjects:
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By: Nuttall, C PType: ArticleIn: Bulletin of the British Museum (Natural History) GeologyVolume: 45Series:Issue:Date: 1990Page Range: 165--371Publication Info: London, BM(NH),Subjects: