Four-legged, armored dinosaur with a tail club Model: Ankylosaurus by RyanTheMast, licensed under CC BY 3.0 .

Upright walking dinosaur with erect neck collar (does not match archaeological finds) Model: Dilophosaurus Attack! by RyanTheMast, licensed under CC BY 3.0 .

Upright walking carnivorous dinosaur with a crest on its head Model: Dilophosaurus by RyanTheMast, licensed under CC BY 3.0 .

Duck-billed dinosaur with backward-facing bony cone on its head Model: Parasaurolophus by RyanTheMast, licensed under CC BY 3.0 .

Carnivorous, upright running dinosaur jumping Model: Velociraptor by RyanTheMast, licensed under CC BY 3.0 .