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Animalia | Arthropoda | Insecta | Diptera | Athericidae and Paleontology--Colorado--Teller County and Naturalists--Colorado and Atrichops hesperius and Animalia | Arthropoda | Insecta | Diptera | Athericidae by Cockerell%2C Theodore D. A. %28Theodore Dru Alison%29%2C 1866-1948%2C author and Cockerell%2C Theodore D. A. %28Theodore Dru Alison%29%2C 1866-1948%2C author
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