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By: Cleal, Christopher J., - Shute, Cedric HType: ArticleIn: Bulletin of the British Museum (Natural History) GeologyVolume: 46Series:Issue: 2Date: 1991-01-31Page Range: 153--174Publication Info: London, BM(NH),Subjects:
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By: Cleal, Christopher J., - Shute, Cedric HType: ArticleIn: Bulletin of the Natural History Museum. Geology seriesVolume: 51Series:Issue:Date: 1995Page Range: 1--52Publication Info: Andover, Intercept,Subjects: