Lycorhinus and Heterodontosaurus both had high-crowned cheek teeth , which overlapped each other in the jaw , forming a continuous chewing surface analogous to those of Cretaceous hadrosaurids .
Lycorhinus and Heterodontosaurus both had high-crowned cheek teeth , which went over each other in the jaw , making a continuous chewing surface analogous to those of Cretaceous hadrosaurids .