Tyrannosauroidea skull comparison

A = Proceratosaurus
B = Guanlong
C = Sinotyrannus
D = Dilong
E = Eotyrannus
F = Xiongguanlong
G = Yutyrannus
H = Appalachiosaurus
I = Bistahieversor
J = Gorgosaurus
K = Albertosaurus
L = Daspletosaurus
M = Alioramus
N = Teratophoneus
O = Tyrannosaurus
P = Tarbosaurus
Q = Nanotyrannus