modern humans , among extant hominoids , possess a unique projecting , external nose whose basic structure is reflected in a series of skeletal features including nasal bone convexity , an internasal angle , lateral nasal aperture eversion , prominence and anterior positioning of the anterior nasal spine , an acute angle of the subnasal alveolar clivus , and an expansion of the breadth of the nasal bones relative to that of the piriform aperture .
C0028429
nasal
C0027422
nasal bones