Paleoambiente en cuatro sitios mexicanos del Pleistoceno tardío con actividad humana inferidos a partir de la fauna

Abstract

The environment of four late Pleistocene Mexican sites, with human presence, was inferred using carbon and oxygen stable isotope relationships from herbivores enamel, which lived at those sites and was obtained from previous studies. Those analyses showed the presence of forest with grasslands at the sites Fin del Mundo, Rancho La Amapola, and Valsequillo, while Tocuila had grasslands and more humid environmental conditions than at present. At the four localities, these environments favored the coexistence of several herbivorous species and allowed the establishment of the first people in Mexico.

Stable Carbon and Oxygen Isotopes as Environmental Indicators of the Late Pleistocene in El Arenoso, Sonora, Northwest Mexico

“…For example, in the present, the climate of Fin del Mundo is BW (h´) (x´) (very dry warm), with annual rainfall of 200-300 mm, a temperature between 18 °C and 22 °C, and desert scrub (Vidal Zepeda, 2005;Sánchez et al, 2014). However, carbon and oxygen isotopic analyses from gomphotheres from the Late Pleistocene in this locality indicated the presence of grassland with forest nearby (Pérez-Crespo et al, 2019). Thus, in this geological epoch, the Fin del Mundo was more humid than at present.…”

Description of the Neochoerus specimens from the Late Pleistocene (Rancholabrean) of Chiapas, and comments on the taxonomic identity of the fossil capybaras from other Mexican localities

“…However, these remains have not been illustrated. Later, Pérez-Crespo et al (2014, 2019 mentioned the presence of Neochoerus sp. in Valsequillo.…”