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By: Vannier, Jean - Siveter, David J. - Schallreuter, Roger E LType: ArticleIn: PalaeontologyVolume: 32Series:Issue:Date: 1989Page Range: 163--222Publication Info: London, Palaeontological Association, 1957-Subjects:
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By: Schallreuter, Roger E L - Siveter, David J.Type: ArticleIn: PalaeontologyVolume: 28Series:Issue:Date: 1985Page Range: 577--598Publication Info: London, Palaeontological Association, 1957-Subjects: