Saurischians
by Amy S.
Dinosaurs that didn’t become Ornithischians became Saurischians. All Saurischian dinosaurs developed a five-fingered hand on both of their forearms. This gave all the Saurischians excellent grasping ability to hold or pick up food or other things. The Seagull, Tyrannosaurus, and Apatosaurus are three examples of Saurischians. The Apatosaurus, however, does not have a grasping hand because it needed to stand on all four feet because it was so large. Now they could stand on all four legs and they didn’t need the grasping hands for anything. This is true for many Saurischians that evolved long necks and tails.
Last updated April 7, 2007.