Fig. 1 in Dentary groove morphology does not distinguish 'Nanotyrannus' as a valid taxon of tyrannosauroid dinosaur. Comment on: "Distribution of the dentary groove of theropod dinosaurs: Im...

Fig. 1. Lateral views of tyrannosauroid dentaries with a lateral groove (indicated by arrows). (A) Tarbosaurus bataar, PIN 4216/3 (image reversed); (B) Tarbosaurus bataar, PIN 551-2/ 1; (C) Adult Tyrannosaurus rex, MOR 008 (image reversed); (D) Adult Tyrannosaurus rex, AMNH FARB 5027 (cast); (E) Juvenile Daspletosaurus torosus, TMP 1994.143.0001; (F) Adult Daspletosaurus torosus, CMN 8506 (image reversed); (G) Juvenile Bistahieversor sealeyi, NMMNHS P-25049 (image reversed); (H) Adult Bistahieversor sealeyi, NMMNHS P-27469; (I) Juvenile Gorgosaurus libratus, ROM 1247 (image reversed); (J) Adult Gorgosaurus libratus, CMNN 2120. Scale bars equal 10 cm. Scales not available for A-C because these photographs were taken of specimens on display behind glass.