Polydolops rothi Simpson, 1936

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

Polydolops rothi Simpson, 1936

The holotype of this species is MLP 11–122, a left dentary with p3–m2 from Cerro Pan de Azúcar, near Gaiman, Chubut Province, but several upper and lower specimens were found in La Barda and Laguna Fría. Polydolops rothi differs from other species of the genus for its poorly to moderately developed p3; size intermediate between the larger P. mayoi and the smaller P. clavulus ; m1 with the sharp crest of the trigonid short; hypoconulid clearly more anterior than the entoconid; M2 slightly reduced in width with respect to M1; metacone and StB well developed and partially fused at the base of M2.