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Mammals of the El Palmar Formation (late Pleistocene) from Entre Ríos province, Argentina

2007; Museo Argentino de Ciencias Naturales Bernardino Rivadavia e Instituto Nacional de Investigación de las Ciencias Naturales; Volume: 9; Linguagem: Inglês

10.22179/revmacn.9.302

1853-0400

Brenda S. Ferrero, Diego Brandoni, Jorge I. Noriega, Alfredo A. Carlini,

Wildlife Ecology and Conservation

Mammals of the El Palmar Formation (late Pleistocene) from Entre Ríos province, Argentina. The diversity of mammals of the El Boyero locality (31º25’S, 58º 02’O), situated in the proximities of Concordia city, Entre Ríos Province is analysed in this contribution. The fossil remains come from the El Palmar Formation, which is the highest terrace of the western margin of the Uruguay river, in the mentioned province, and whose age is assigned to the late Pleistocene. Eight taxa have been identified at specific level: Megatherium americanum (Megatheriidae Megatheriinae), Mylodon darwini (Mylodontidae Mylodontinae), Macrauchenia patachonica (Litopterna Macraucheniidae), Toxodon cf. platensis (Notoungulata Toxodontidae), Tapirus cf. terrestris (Perissodactyla Tapiridae), Equus (Amerhippus) cf. neogeus (Perissodactyla Equidae), Morenelaphus cf. lujanensis, Antifer sp. (Artiodactyla Cervidae) and Stegomastodon platensis (Proboscidea Gomphotheriidae). The paleontological record of mammals from the El Palmar Formation was limited to Stegomastodon platensis; therefore, the identification of the new taxa increases substantially the biodiversity known in the El Palmar Formation. Also, the first record of Morenelaphus cf. lujanensis is announced for the Entre Ríos Province. The presence of Equus (A.) cf. neogeus would postulate a Lujanian age (late Pleistoceneearly Holocene) for the described association.