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By "Yunan, Ni "
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Taxonomy, phylogeny, and variability of Pseudisograptus Beavis
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By: Cooper, R. A. (Roger Alan), - Yunan, Ni
Type: Article
In: Palaeontology
Volume: 29
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Date: 1986
Page Range: 313--363
Publication Info: London, Palaeontological Association, 1957-
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