FIGURE 9 in Calling for a reassessment of rodent diversity in Colombia: description of a new species of Neacomys (Cricetidae: Oryzomyini) from the Magdalena Valley, with a new phylogenetic hypothesis for the genus and comments on its diversification

FIGURE 9. Comparison of the dorsal and ventral views of the skulls of Trans-Andean species of Neacomys present in Colombia: A), C) Neacomys sp. nov. (UIS-MHN-M 1068, holotype). B), D) Neacomys tenuipes (UIS-MHN-M 1723). Note the nasals more expanded anteriorly, the shallower zygomatic notches, the less developed supraorbital ridges, the procingulum of M1 flattened laterally, and the incisive foramina extending almost to anterior alveolus of M1 in Neacomys sp. nov. if: incisive foramen; M1 prc: procingulum of first upper molar; nas: nasal bone; sob: supraorbital beads; zn: zygomatic notch.