Polydolops, Tejedor & Goin & Gelfo & López & Bond & Carlini & Scillato-Yané & Woodburne & Chornogubsky & Aragón & Reguero & Czaplewski & Vincon & Martin & Ciancio, 2009

Tejedor, Marcelo F., Goin, Francisco J., Gelfo, Javier N., López, Guillermo, Bond, Mariano, Carlini, Alfredo A., Scillato-Yané, Gustavo J., Woodburne, Michael O., Chornogubsky, Laura, Aragón, Eugenio, Reguero, Marcelo A., Czaplewski, Nicholas J., Vincon, Sergio, Martin, Gabriel M. & Ciancio, Martín R., 2009, New Early Eocene Mammalian Fauna from Western Patagonia, Argentina, American Museum Novitates 3638, pp. 1-43 : 17-18

Polydolops , sp. nov. 3

LIEB-PV 1178 is a right mandibular fragment with p3–m1 from La Barda. This is the only specimen assigned to this new taxon and differs from P. thomasi by having a p2 comparatively larger; more significant size difference between p3 (larger) and m1 (small- er); anterior lingual cusp of m1 divided into two adjacent cusps. It differs from P. mayoi in its smaller size; p2 with two roots and smaller m1 relative to p3. In general, this new taxon shows a combination of generalized and derived traits.

Genus Amphidolops Ameghino, 1902