FAUNAL ASSEMBLAGES FROM THE QUATERNARY OF SAN FRANCISCO, CÓRDOBA PROVINCE, ARGENTINA. BIOSTRATIGRAPHIC AND TAXONOMIC IMPLICATIONS. The chronological scale and continental biostratigraphy of South America was established on the base of fossil mammals from the Pampean Region. This scheme consists of Stages/Ages based on Biozones, with the late Miocene—early Holocene type localities in the Buenos Aires province. In the Córdoba province, several geological and stratigraphical studies have been undertaken since the 1990s and have provided a regionally useful scheme for biostratigraphic studies of the Quaternary. The aim of this work is to perform a biostratigraphic study of the San Francisco locality, in the east central region of the Cordoba province through the analysis of its mammal assemblages and to analyze the correlation with the scale proposed for the Pampean Region. We describe two faunal assemblages from two stratigraphical levels: (1) the faunal assemblage from the stratigraphic level 2 consisting of Lomaphorus sp., Neosclerocalyptus ornatus Owen, Catonyx tarijensis (Gervais and Ameghino), Scelidotheriinae indet., Macrauchenia patachonica Owen, Hemiauchenia paradoxa Gervais and Ameghino, Smilodon populator Lund and Panthera onca (Linnaeus) and assigned to the Ensenadan (early—middle Pleistocene) of the Pampean region; and (2) the faunal assemblage from the stratigraphic level 3 consisting of Neosclerocalyptus paskoensis (Zurita), Equus (Amerhippus) sp., Toxodon sp., Arctotherium sp., and cf. Lagostomus Brokes and assigned to the Lujanian (late Pleistocene—early Holocene) of the Pampean region. New records for Córdoba Province include Neosclerocalyptus ornatus, Panthera onca, and Arctotherium sp.; in addition, the latter represents the first record of the Ursidae family.
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Vol. 49 • No. 4