We studied Rhinicthys osculus and its close relatives to discover evolutionary processes that operated to produce this widespread, polytypic fish group in an intermountain landscape of hundreds of small, isolated drainages. This group has attracted study because of its many ambiguously distinctive populations, in which homoplastic traits are shared across local geographic barriers. The observed morphological ambiguity is clarified by phylogenetic analyses of mtDNA data from 73 locations, which show deep divergences separating several dozen hypothetically monophyletic groups.Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/136783/1/MP204 vol2.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/136783/2/Rhinichthys Appendix MP204 vol2.pdfDescription of MP204 vol2.pdf : Main ArticleDescription of Rhinichthys Appendix MP204 vol2.pdf : Datase
