1.
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The largest known bear, Arctotherium angustidens, from the early Pleistocene pampeam region of Argentina: with a discussion of size and diet trends in bears Schubert, Blaine W. - Soibelzon, Leopoldo Héctor
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2.
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Preliminar results on the vertebrate fauna of the Solimões Formation (upper Miocene), southwestern Amazonia, Acre, Brazil Aureliano Neto, T. - Dumont Junior, M. V. - Souza Filho, J. P.
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