Hello,
These are the deadliest dinosaurs that ever lived. I did some research on these things and found out some crazy shit about them. My favorite one out of these choices is the Coelophiysis Bauri. They initially aren't that big. But they hunt in packs, and have razor-like teeth. [b]#PiranhasOnLand[/b]
Secret 8th choice: Allosaurus
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Ankylosaurus, I know they basically have armour, but go for the belly or neck from a distance where their tail club can't reach you, sorted.