prehistoric Lophoraptorids

Beside Terrorlophosaurus [link] , the South american landmass the home of an multitude of dragons. Before the Aquilapoda from the north conquer the new habitats, this were the kings of the pampa.
But not only big species like Boroepula (5m) or Palalophoraptor (4,3m) went hunting. Pusilloscalprum was just a half meter long and maybe was specialized on Parasites which they picked from the bodies of larger animals (like Toxodon).