Dinosaur ColumnDinosaur TypesDinosaur CharacteristicsDinosaur FossilsEra The Dinosaurs That Decorated Their Heads: Marginocephalians—Uncovering the Evolutionary Secrets of Horns and Frills. What Are Ornithischians? Unveiling Key Species and Surprising Truths About One of the Three Major Dinosaur Groups. 12
Jurassic 
