Contribución al conocimiento de los rinocerontes fósiles de la Cuenca de Tecolotlán, en el estado de Jalisco, México

Abstract

Remains of Teleoceras hicksi (Perissodactyla, Rhinocerotidae), housed at the "Museo de Paleontologia"in Guadalajara and the " Museo Regional de Guadalajara", recovered from the fluvial lacustrine sediments in the Tecolotlan Basin are described. The studied material includes a partial skull bearing P2-M3 and one lower jaw preserving I2 and P3-M3, the anterior part of an isolated lower jaw with left I2 and P3-M3, one isolated lower jaw with P3-M3 dental series in wich the symphyseal region is missing, also isolated molars, two magnus, one left metacarpus III, and one first phalange of the right digit III. Morphological differences were observed in the material examined attributed to differences in age and/or sex of the individuals. Teleoceras hicksi was found associated with Dinohippus mexicanus, Nannippus aztecus, Neohipparion eurystyle, Astrohippus stockii and Borophagus secundus, suggesting a late Hemphillian age for the faunal association.