Browsing by Subject "New Species"

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Late Hemphilian Mammals of the Ocote Local Fauna, Guanajuato, Mexico
(Texas Memorial Museum, The University of Texas at Austin, 1980-02) Dalquest, Walter W.; Mooser, Osawaldo
The Ocote local fauna is described from several thousand fossils, mostly isolated teeth, of large mammals, obtained from sediments near the village of Los Rodriguez, District of San Miguel de Allende, northeast of the city of San Miguel de Allende, Guanajuato, Mexico. Teleoceras ocotensis, Desrnathyus brachydontus, and Palaeolama guanajuatensis are described as new, the name Paenemarmota Mexicana (Wilson) is revived, and descriptions of the dentitions of six species of horses are given. It is suggested that the Pliocene evolution of Desrnathyus and Palaeolama took place on the Mexican Plateau. The evolutionary stage of the Ocote mammals suggests that the fauna is of late Hemphillian age.
Vertebrate Paleontology and Paleoecology of Paleocene Black Peaks Formation, Big Bend National Park, Texas
(Texas Memorial Museum, The University of Texas at Austin, 1974-08) Schiebout, Judith Ann
The fauna of the Black Peaks Formation is the southernmost large Paleocene fauna of North America. It contains 29 species of mammals belonging to 28 genera and includes three new species, a barylambdid pantodont, a multituberculate, and an insectivore. The 170-meter (560-foot) thick formation has three principal faunal levels. The lowest level is latest Torrejonian or earliest Tiffanian in age, the second is early Tiffanian, and the third is Clarkforkian. The formation was deposited by meandering rivers; the climate in the region was semitropical to tropical with alternating wet and dry periods of greater than seasonal duration.