Resumo

PEREZ-CRESPO, Victor Adrián et al. Isotopic data (δ¹³C, δ¹⁸O) of the Pleistocene fauna from Laguna de las Cruces, San Luis Potosí, Mexico. Rev. mex. cienc. geol [online]. 2012, vol.29, n.2, pp.299-307. ISSN 2007-2902.

Using bioegeochemical markers δ¹³C and δ¹⁸O, we determined the diet and habitat of three extinct mammals: Camelops hesternus, Equus sp. and Mammuthus columbi, found in Laguna de las Cruces (San Luis Potosí, México). The statistical comparisons assayed among them showed that there are not differences in their diet since all of them may be classified as C₃/C₄ mixed feeders. Camelops hesternus used to have the major consumption of C₄ plants, meanwhile Mammuthus columbi and Equus sp. ate more C₃plants. Those little differences in their feeding habits should explain their coexistence them at the site, that was a grassland with some trees, during Late Pleistocene.

Palavras-chave : Camelops hesternus; Equus sp. Mammuthus columbi; diet; habitat; resource partition.

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