Classification of Osborn 1923
G. †Serridentinus Osborn 1923
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†Serridentinus floridanus Leidy 1886
†Serridentinus obscurus Leidy 1869
†Serridentinus productus Cope 1874
†Serridentinus progressus Osborn 1923
†Serridentinus serridens Cope 1884
†Serridentinus simplicidens Osborn 1923
G. †Rhynchotherium Falconer 1868
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†Rhynchotherium falconeri Osborn 1923
†Rhynchotherium rectidens Osborn 1923