Stegoceratops

Stegoceratops was a species of Cerotopsid that was native to Asia during the Late Cretaceous (around 85-66 mya). It was one of the most unusual dinosaurs to have existed because it resembles a cross between a Triceratops (in head, legs, locomotion, and defenses on its head) and a Jurassic Stegosaurus (in plates, spikes on its tail, and its defenses on its tail), probably because of the convergent evolution, having their tails elongated (more so than most other Ceratopsids of the Late Cretaceous) and their quill-like structures on their backs forming into Stegosaurus-like plates on its back (for display) and spikes on its tail (for defense). They were mostly herbivorous and fed mainly on cycads, ferns, leaves, and fruits, but could have also have been somewhat omnivorous and sometimes fed on insects and carrion. They might have went extinct due to the mass extinction caused by an asteroid/comet that slamed into the Gulf of Mexico, causing massive environmental changes very quickly, killing off the Stegoceratops's food supply, causing the extinction of the Stegoceratops.