Stegoceras was created in 1902.
No, it does not!
There are both Pachycephalosaurs
A Stego-breakas!
they use their rooof horn as proection.
It was a dinosaur that lived in what is now North America during the Late Cretaceous Period
9 metres (30 ft) long and 4 metres (14 ft) tall
Hank and Crank, two stegoceras head butters
the troodon, t-rex , lambeosaurus, triceritops,anklyosaurus albertaceratops,stegoceras these ain't the half of it go to http://traumador.blogspot.com/2009/01/albertas-dinosaurs.html
Albertosaurus,Einiosaurus(don't click on it if you did),Torvosaurus,AcrocanthosaurusGorgosaurus,Daspletosaurus,StyracosaurusPachyrhinosaurus,Chasmosaurus,Eucentrosarus,Anchiceratops,Arrinoceratops,CentrosaurusEdmontonia,Ankylosaurus,Euplocephalus,Parasaurolophus,Lambeosaurus,Iguanodon,Saurolophus(No I did Not Forget to put Para In front that's it's actual name Saurolophus),Allosaurus,Pachycephalosaurus,Pteranodons,Troodon,Stegoceras,Quetzalcoatlus,Supersaurus(Yes that's it's name.),and The Second King of all time Tyrannosaurus Rex/T-Rex Hope this helped With your Dinosaur Knowledge
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