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Mackenziurus, a New Genus of the Silurian "Encrinurus" Variolaris Plexus (Trilobita)

Gregory D. EdgecombeBrian D. E. Chatterton

出版	American Museum of Natural History, 1990
URL	http://books.google.com.hk/books?id=0ksiHwAACAAJ&hl=&source=gbs_api