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<br /> <br /> <br /> <br />the continued construction of dams in this river system, the species is in danger of <br />complete extinction. <br />A wild section of river of suitable habitat should be set aside somewhere in the <br />Colorado River Drainage as a refuge for this species, the largest of the American <br />squawfishes. <br /> <br />Speckled dace <br />Rhinichthys osculus (Girard) <br /> <br />, ~,.. ,::; <br />/~/ <br /> <br />. <br /> <br /> <br />Cerathichthys sqUllmilentus. Cope, 1872: 442 (Henrys Fork of the Green River, Wyoming). <br />AgoN nubila. 10rdan, 1891: 48 (Witch Creek, YeDowstone National Park). <br />Apocope oscula thermalis. Hubbs and Kuhne, 1937: 1-21 (description, new species, Kendall <br />Warm Spring, Wyoming). <br /> <br />74 <br /> <br />".~,.,,""'''''" <br />,,-. ", <br />" <br /> <br />, <br />t <br /> <br />t <br /> <br />j <br />t <br />l <br />t <br />I <br /> <br />r <br />