The end of the Triassic Period, 201.4 million years ago ... They have chewing teeth as well as noticeable tusks or fang-like teeth. The primitive ornithischian Heterodontosaurus had different types of ...

A new review of Triassic fossils from Germany reveals rich tetrapod diversity and links to modern biodiversity and climate ...

Ornithischian was a diverse ... back to the Early Jurassic period. This period was a time of major change and recovery following the devastating Triassic-Jurassic extinction event.