Fig. 44 in The Mammals Of Paracou, French Guiana: A Neotropical Lowland Rainforest Fauna Part 2. Nonvolant Species

Fig. 44. Outlines of nasal bones in typical examples of Nectomys palmipes (top row) and N. melanius (bottom row). Whereas the nasals are abruptly constricted behind the premaxillary­frontal suture in N. palmipes, these bones are more­or­less evenly tapered throughout their length in N. melanius. Although atypical morphologies occur uncommonly in both species, this character is useful for taxonomic identifications when used in combination with other cranial traits (table 24; figs. 45–47).