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By: Riva, JohnType: ArticleIn: Bulletin of the British Museum (Natural History) GeologyVolume: 43Series:Issue:Date: 1988Page Range: 221--237Publication Info: London, BM(NH),Subjects:
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By: Riva, JohnType: ArticleIn: PalaeontologyVolume: 17Series:Issue:Date: 1974Page Range: 1--40Publication Info: London, Palaeontological Association, 1957-Subjects: