Browsing by Subject "Reptilia"
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Item Blancan Mammalian Fauna and Pleistocene Formations, Hudspeth County, Texas(Texas Memorial Museum, The University of Texas at Austin, 1966-02) Strain, William SamuelVertebrate fossils representing a new Blancan local fauna occur in the Fort Hancock Formation (new name) and the Camp Rice Formation (new name), Hueco Bolson (Fig. 1) Hudspeth County, Texas. Fossils indicate the Fort Hancock Formation and the lower part of the Camp Rice Formation are probably Aftonian in age. Pearlette volcanic ash dates the middle of the Camp Rice as late Kansan. It also provides a precise horizon for correlating the Pleistocene stratigraphic section of the Great Plains with that in the Hueco Bolson. The Fort Hancock Formation is composed of clay, silt, fine sand, and gypsum. Silt, sand, gravel, some clay, and volcanic ash characterize the Camp RiceFormation. An unconformity separates the formations. The Fort Hancock was deposited in a closed basin, but the Camp Rice represents fluvial and floodplain deposition by the Rio Grande after it developed as a through-flowing stream in the Hueco Bolson during late Kansan.Item New Early Miocene Formation and Vertebrate Local Fauna, Big Bend National Park, Brewster County, Texas(Texas Memorial Museum, The University of Texas at Austin, 1968-08) Stevens, Margaret S.; Stevens, James B.; Dawson, Mary R.The early Miocene Delaho (new) Formation is a locally derived sequence of basin fill sediments now severely deformed by later Tertiary normal faulting. These sediments contain the Castolon local fauna comprising seventeen mammalian taxa. Three genera are new. Age of the Castolon local fauna is considered middle Arikareean, and differences between it and other Arikareean faunas are caused in part by ecological bias.Item A New Systematic Arrangement for Philodryas serra (Schlegel) and Phylodryas pseudoserra Amaral (Serpentes: Colubridae)(Texas Memorial Museum, The University of Texas at Austin, 1977-07) Thomas, Robert A.; Dixon, James R.Item Vertebrate Footprints and Invertebrate Traces from the Cadronian(Late Eocene) of Trans-Pecos Texas(Texas Memorial Museum, The University of Texas at Austin, 1994) S. Sarjeant, William Anthony; Langston Jr, WannCeratomorph 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.