Top 10 Terrifying Extinct Animals

   -When you hear the word extinct, you'll probably think of Dinosaurs. But there are some creatures that once lived on our planet that were much more terrifying than a T-Rex! Some of them you probably can't even spell their names right.

10: Jaekelopterus

This is a 9-foot creature that basically looks like a scorpion did it with a millipede.

9: Pulmonoscorpius

One of the biggest Nopes to ever live. Nope, Nope, and Nope.

Imagine a scorpion about 4 feet long. that's it, enough said.

8: Gorgonops

This ancient creature shows that our planet was filled with scary beasts long before the Dinosaurs even came. It lived 260 million years ago. At around six to ten feet in length, gorgonops was a fast and vicious predator, which allowed it to rise to the top of the food chain. Of course, it also helped that gorgonops had massive canines so large they nearly protruded beyond its lower jaw.

7: Quetzalcoatlus

Size Comparison

The very famous pterodactyl was not a dinosaur. It was a pterosaur, a completely different order from dinosaurs. But even the pterodactyl wasn’t the most dangerous thing in the skies. That honor goes to quetzalcoatlus, the largest creature ever to fly. their fossil records are very poor so we don't know much about these flying giants, however, some scientists estimate it's wing span to be somewhere between 40 & 60 feet wide and weighed somewhere between 450 & 550 pounds.

6: Liopleurodon

Plesiosaurs were a group of marine reptiles (“dinosaurs-that-weren’t-actually-dinosaurs”) that appeared and disappeared almost at the same time as the dinosaurs so they're often mistaken to be the same. Liopleurodon was a gigantic carnivorous beast that could weight 3500 pounds and reach more than 30 feet long. One-quarter of that is only in his skull with surely razor sharp teeth and a tunnel wide jaw.

5: Titanoboa

Titanoboa is simply the largest snake that ever existed. It was more than 40 feet long and could weigh up to 2500 pounds!

4: Thalattoarchon

Image Courtesy of National Geographic Magazine

discovered a few years ago and officially classified as a genus in 2013. It was an ichthyosaur, another group of marine reptiles commonly and incorrectly believed to be dinosaurs. it could reach 28 feet long with jaws powerful enough to enable them to hunt prey their own size!

3: Sarcosuchus

Sarcosuchus, or as scientists like to call him "SuperCroc" was almost twice as long as the salt water crocodile (which is the largest crocodile alive today), reaching about 40 feet in length.

2: Mosasaurus

His treat was just a dolphin. I wonder what the main course is?

Like plesiosaurs, mosasaurs were marine reptiles, and not technically dinosaurs. It could reach about 60 feet in length, and one of the most dangerous things that ever roamed the oceans. It was that huge marine animal featured in the newest Jurassic Park movie by the way.

1: Megalodon

And you complain about great whites?

The ultimate king of the sea, Dubbed "The Greatest Apex Predator Of All Time" by Paleontologists, the closest resemblance to it is today's great white shark, the difference is it was minimum 40 feet to maximum 60 feet in length, had teeth that dwarves great white sharks' teeth in comparison and weight somewhere between 50 and 100 Metric Tons!