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By: Riccardi, A C - Sabattini, NoraType: ArticleIn: PalaeontologyVolume: 18Series:Issue:Date: 1975Page Range: 117--136Publication Info: London, Palaeontological Association, 1957-Subjects:
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By: Riccardi, A C - Aguirre-Urreta, Maria BeatrizType: ArticleIn: PalaeontologyVolume: 32Series:Issue:Date: 1989Page Range: 447--462Publication Info: London, Palaeontological Association, 1957-Subjects: