Figure 2
From: Developmental and evolutionary novelty in the serrated teeth of theropod dinosaurs
Microanatomy of ziphodont teeth lacking deep interdental folds.
(A) Carcharodon megalodon (ROM 30530). (B) Smilodon sp. (ROM 3288) carina, lacking denticles (not a true ziphodont animal as the carina is composed of enamel only). (C) Varanus komodoensis (ROM R7565), distal carina, with unevenly sized denticles. (D) Hadrosaurid (ROM 58205) labial denticles. (E) Sagittal thin section through the distal carina of a maxillary tooth of Dimetrodon grandis (ROM 6039), showing inconsistently-sized denticles. Thin section (top), SEM (bottom). (F) Troodon formosus (ROM 05089), mesial carina. Thin section (top), SEM (bottom).
