What is "ornithischians"

Usage examples of "ornithischians".

In ornithischians, the pubis points backward beneath the hip (as it does in modern birds).

Another, more excusable error (given the paucity of specimens at the time) was that dinosaurs constitute not one but two orders of reptiles: the bird-hipped ornithischians and the lizard-hipped saurischians.

The ponderous ornithischians could not thrive in steep mountains dry deserts or icy wastes, and were restricted by the violence of the landscape.