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By: Lefebvre, Fabrice - Nel, André - Papier, Francine - Grauvogel-Stamm, Léa - Gall, Jean-ClaudeType: ArticleIn: PalaeontologyVolume: 41Series:Issue:Date: 1998Page Range: 1195--1200Publication Info: London, Palaeontological Association, 1957-Subjects: