FIGURE 5 in New material of Longipteryx (Aves: Enantiornithes) from the Lower Cretaceous Yixian Formation of China with the first recognized avian tooth crenulations

FIGURE 5. Detailed photograph of the dentition of DNHM-D2889 in labial view. A, photograph of the dentition; B, close up of the first right premaxillary tooth; C, close up of the second right premaxillary tooth; D, close up of the third right premaxillary tooth; E, close up of the fourth right premaxillary tooth.