Squatmaraptor

Squatmaraptor was a species of Dromaeosaur-grouped raptor dinosaur that lived in what is now China during the Late Cretaceous period (around 80-66 mya). It was the first ever confirmed cases of a species of raptor dinosaur with little-to-no feathers, with only males having feathers (which were discovered to be quill-like and were located only on top of the male's heads). They were also the first ever confirmed species to have prognated hands to grasp onto objects (so it is possible for this species to open and close doors and other similar objects). They were also among the smartest dinosaurs on Earth, being about as smart as today's apes such as Chimpanzees, so they were much smarter than Troodons, the smartest non-Dromaeosaur-type dinosaurs. They were the much larger, more intelligent, and more aggressive rivals to the smaller and feathered Velociraptors. Squatmaraptors might had went extinct due to an asteroid/comet impact in the Gulf of Mexico that changed the environment so much that Squatmaraptor couldn't adapt to the changes and were made extinct.