Micropachyrhinus

Micropachyrhinus (name meaning Tiny thick horns) is an extinct species of Cerotopsid (a group of dinosaurs that also includes Triceratops) dinosaur that was the last ever true horned dinosaur, which was the only one to make it through the K-T extinction. It resembled a much bigger Pachyrhinosaurus, but was much smaller and was less bulky, only about the size of a small adult cattle. It was a herbivore that fed on ferns, cycads, leaves, and fruit. The reason for its extinction is not known, but it is possible that it was outcompeted to extinction by newly-arriving large mammal herbivores such as Unitatherium and others.