A species level revision of Bridgerian and Uintan brontotheres (Mammalia, Perissodactyla) exclusive of Palaeosyops Author Mader, Bryn J. text Zootaxa 2008 2008-07-30 1837 1 1 85 https://biotaxa.org/Zootaxa/article/view/zootaxa.1837.1.1 journal article 10.11646/zootaxa.1837.1.1 1175­5334 5127540 Species PSEUDODIPLACODON progressum ( Peterson 1934 ) Holotype . CM 11879 A, a skull ( Fig. 22 ) and lower jaw. Referred specimens. AMNH 21887, CM 2858, CM 11881, FMNH P 14632, FMNH P 14633, FMNH P 14799, FMNH P 15446. Diagnosis. Same as the generic diagnosis.