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By: Holmer, Lars E - Popov, Leonid E - Bassett, Michael G. (Michael Gwyn), - Laurie, JohnType: ArticleIn: PalaeontologyVolume: 38Series:Issue:Date: 1995Page Range: 713--741Publication Info: London, Palaeontological Association, 1957-Subjects:
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By: Williams, Alwyn - Popov, Leonid E - Holmer, Lars E - Cusack, MaggieType: ArticleIn: PalaeontologyVolume: 41Series:Issue:Date: 1998Page Range: 221--262Publication Info: London, Palaeontological Association, 1957-Subjects: