Nothronychus is a genus of rather bizarre Therizinosaurs. There are two species in this genus which is actually a group of herbivorous Theropods derived off of the Maniraptoran clade. It's not every day that you see a group of plant eaters descended from omnivorous and carnivorous beginnings! They're also quite odd looking with and without the artistic impressions of skin scales and feathers. They almost look like ground sloths, to be honest.