Top 7 Scariest Extinct Animals That Ever Lived

You terrified of centipedes? You may not know Athropleura. Prehistoric bipedal arthropod. Despite being termed Athropleura, it is more like a millipede than a centipede.

Arthropleura, The Giant Centipede

Deinosuchus, which means horrible crocodile in Greek, was one of the most fearsome ancient creatures. It existed in the Cretaceous era 82 million to 73 million years ago.

Deinosuchus, The Giant Crocodile

Dragonflies are ugly, as anybody who has seen one will attest. They're not even noticeable. Maybe it's the dragonflies that fly about us.

Meganeura, The Giant Dragonfly

The Late Devonian predatory fish Dunkleosteus was big and ferocious. It was terrifyingly large at 33 feet and over 4 tons. With its huge mouth and steel-like physique, it was an ideal predator.

Dunkleosteus, The Giant Fish

In the Early Miocene to Pliocene, megalodon was a huge shark that lived 2.8 to 1.5 million years ago. According to tooth and spinal fossils, humans are merely "big tooth" animals.

Megalodon, The Giant Shark

Paleontologists and scientists believe that the Titanoboa might be 12 meters (40 feet) long and weigh roughly 1.1 metric tons (2,425 pounds).

Titanoboa, The Giant Snake

The extinct species was the most frequent bear in early North America between 18 million and 11,000 years ago. It's one of the list's newest animals, having just appeared 11,000 years ago.

Arctodus, The Giant Bear