There were two main groups of saurischians -the theropods and the sauropodomorphs. The largest dinosaurs, and some of the smallest, were saurischians. This group differed from ornithischians mainly because of the shape of the hipbones.
Barosaurus - a sauropodomorph
Sauropodomorphs Members of the sauropodomorph group were mainly herbivorous and quadrupedal (walked on four legs). The sauropodomorphs included the largest of all dinosaurs, Seismosaurus, which was about 130 ft (40 m) long.
Was this article helpful?