Early Tertiary Vertebrate Faunas, Trans-Pecos Texas: Ceratomorpha Less Amynodontidae
Ceratomorph remains found in Eocene and Oligocene deposits of Trans-Pecos Texas are herein described, except for the amynodonts which were described in a previous paper. Hyracodon primus, Hyracodon petersoni, and Colodon stovalli n. sp. are described from well-preserved material; Hyrachyus and Dilophodon are not so well represented. Triplopus, Caenopus, and Trigonias are questionably identified and a skull fragment is provisionally referred to Toxotherium. Changes in faunal lists of Trans-Pecos local faunas are reported. Generalized stratigraphic sections of the Vieja and Agua Fria-Green Valley areas are provided.