Comparison of the lower right molar series in occlusal view among some species of Thomasomys: A T. otavalo sp. nov. (MECN 6912, holotype); B T. ucucha (MECN 7937); C T. igor sp. nov. (MECN 702, holotype); D T. silvestris (MECN 4928); abbreviations: ml, mesolophid; prf, protoflexid. Scale bar: 1 mm.

 
 
  Part of: Brito J, García R, Castellanos FX, Gavilanes G, Curay J, Carrión-Olmedo JC, Reyes-Barriga D, Guayasamin JM, Salazar-Bravo J, Pinto CM (2024) Two new species of Thomasomys (Cricetidae: Sigmodontinae) from the western Andes of Ecuador and an updated phylogenetic hypothesis for the genus. Vertebrate Zoology 74: 709-734. https://doi.org/10.3897/vz.74.e128528