ADJ
of, relating to, or belonging to the Ornithischia, an order of dinosaurs that included the ornithopods, stegosaurs, ankylosaurs, and triceratops 鸟臀目恐龙的
2.
N
any dinosaur of the order Ornithischia; a bird-hipped dinosaur 鸟臀目恐龙
Sauropodomorphs included ground-shaking giants like Apatasaurus, and ornithischians included a range of dinosaurs, such as Stegosaurus and Triceratops.
He explained that it filled a gap in the fossil record, demonstrating that dinosaurs split into their three major groups - theropods, sauropodomorphs and ornithischians - very early in their evolution.