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Animalia+%7C+Arthropoda+%7C+Insecta+%7C+Diptera+%7C+Athericidae and Paleontology--Colorado--Teller+County and Naturalists--Colorado and Atrichops+hesperius and Animalia+%7C+Arthropoda+%7C+Insecta+%7C+Diptera+%7C+Athericidae by Cockerell%25252C%2BTheodore%2BD.%2BA.%2B%252528Theodore%2BDru%2BAlison%252529%25252C%2B1866-1948%25252C%2Bauthor and Cockerell%25252C%2BTheodore%2BD.%2BA.%2B%252528Theodore%2BDru%2BAlison%252529%25252C%2B1866-1948%25252C%2Bauthor of Florissant+Fossil+Beds+National+Monument+%28Colo.%29
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