The systematic status and evolutionary significance of the robust tuco-tuco <i>Ctenomys latidens</i> from the Pleistocene of central Argentina
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We conduct a systematic review of the extinct robust species of <i>Ctenomys</i> from the Early-Middle Pleistocene of central Argentina to assess the systematic status of †<i>Ctenomys latidens</i>. Based on qualitative comparisons and geometric morphometric evidence, †<i>Ctenomys latidens</i> is identified as a well-supported species, clearly distinguishable from †<i>Ctenomys magnus</i> and †<i>Ctenomys kraglievichi</i>. We propose †<i>Ctenomys intermedius</i> Rusconi, 1931a, and †<i>Ctenomys dasseni</i> Rusconi, 1931a as junior synonyms of †<i>C. latidens</i>. Accordingly, †<i>Ctenomys latidens</i> is recorded in the late Ensenadan age (late Early to early Middle Pleistocene) of Buenos Aires Province in central Argentina. Additionally, we suggest upgrading †<i>Ctenomys intermedius tandilensis</i> Rusconi, 1931a, and †<i>Ctenomys latidens orthognathus</i> Rusconi, 1931a to full species status. Finally, we demonstrate that the name †<i>Plateomys scindens</i> cannot be applied to the Early Pliocene Octodontidae currently recognised as †<i>Pseudoplataeomys formosus</i>, as that taxon is a potential junior synonym of †<i>Ctenomys latidens</i>.
