Answer:
Brandon can conclude that the animal he saw is an ankylosaurus. The fossil he saw shows that the dinosaur's back was covered by bony plates. These plates made it look like it was wearing a suit of armor. It also had a club-like structure at the end of its tail.
Explaining:
Ankylosaurus is a herbivorous dinosaur that has a strong defense mechanism, making them fearless even against tyrannosaurus rex. The ankylosaurus's tail has a large knob like a mace that it uses to attack predators and attract mates.