Norell echoed that sentiment, mentioning that therizinosaurs continue to vex paleontologists with their weird bodies. Therizinosaurs are related to meat eating dinosaurs like Tyrannosaurus rex and Velociraptor, but are themselves herbivorous. Additionally, therizinosaurs have highly specialized hands and feet, both with giant claws similar to a tree sloth. Because of that radical body form, paleontologists have had a hard time figuring out where to place therizinosaurs in the evolutionary tree. Holtz and Norell both mentioned that this new specimen, with its intact skull, might help fix some of that confusion.