Any of several primitive ornithischian dinosaurs constituting the family Heterodontosauridae, which were small and lightly built and had canine-like tusks as well as cheek teeth for chewing.
Their remains date from the late Triassic to the early Cretaceous.
Designating dinosaurs of the family Heterodontosauridae; of or relating to such a dinosaur.
1960s. From scientific Latin Heterodontosaurus, genus name + -id, after Heterodontosauridae, family name.