Smithsonian miscellaneous collections . X 0. /A W TiLLODONT SKUUL FROM THE HUERFANO MIDDLE EOCENE Trogosus hillsii, new species: Skull ( No. 17157), type specimen,ventral view. Approximately one-half natural size. SMITHSONIAN MISCELLANEOUS COLLECTIONS Vol. 121, No. 10, PI. 12

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Keywords: ., bookauthorsm, bookcentury1800, bookdecade1860, booksubjectscience