Worst Prehistoric Animals

For creatures we are not the fan of or could impact modern species. Feel free to add any prehistoric creatures that you disliked and/or the creatures that would have an impact in today's world, it has to be a real prehistoric creature (like Carnotaurus, etc, not fictional ones like goku and such).
The Top Ten
1 Saltasaurus

Worst because the hatchlings make annoying sounds similar to bear cubs, and the real Saltasaurus hatchlings might have sound like bear cubs.

2 Megalodon The megalodon is an extinct species of shark which was about 59 feet (18 meters) long and hunted in the seas until about 1.5 million years ago. It was similar to today's great white shark-but three times longer and 20 times heavier... read more

It is just an oversized shark, nothing is unique about this Cenozoic fish.

3 American Lion

It is just a lion only living in the Americas.

4 Carnotaurus Carnotaurus, meaning "Meat eating Bull" in Ancient Greek, is a genus of abelisauridae theropod dinosaur that lived in what is now South America about 70 million years ago in the Late Cretaceous period.

Why does it look like a devil from fiction? I don't know why.

5 Ichthyornis

It would be really annoying if alive today especially if they steal food like seagulls.

6 Giant Vampire Bat

This extinct gigantic Ice Age vampire bat would cause problems in today's world if they drank blood out of domestic livestock and if they spread modern diseases like rabies.

I didn't knew that this existed

7 Giant Cheetah

It is just an oversized lion-sized cheetah.

8 Argentavis

It's just an oversized version of today's condors and vultures, I mean, what's so exciting about basically just oversized versions of today's animals?

9 Megalania

It is just a large monitor lizard.

10 Cretoxyrhina

It is just a Mesozoic counterpart of modern great white sharks. What's so exciting about that?

The Contenders
11 Irritator
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