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research+notes and Paleontology--Colorado--Teller+County and Hirmoneura and Naturalists--Colorado and Animalia+%7C+Arthropoda+%7C+Insecta+%7C+Diptera+%7C+Nemestrinidae by Cockerell%2C+Theodore+D.+A.+%28Theodore+Dru+Alison%29%2C+1866-1948%2C+author of Florissant+Fossil+Beds+National+Monument+%28Colo.%29 from Undated
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