Top 10 Scariest Prehistoric Non-Dinosaurs Monsters

The Top Ten
1 Thalattoarchon
2 Megatherium
3 Phorusrhacidae
4 Megalodon

Get this up at no. 1. This animal could swallow any of the animals above without knowing

Prehistoric sharks!

5 Gorgonops
6 Quetzalcoatlus
7 Mosasaur
8 Sarcosuchus
9 Liopleurodon Liopleurodon is a genus of large, carnivorous marine reptile belonging to the Pliosauroidea, a clade of short-necked plesiosaurs. The two species of Liopleurodon lived during the Callovian stage of the Middle Jurassic Period.
10 Pterodactyl
The Contenders
11 Titanoboa
12 Jaekelopterus Rhenaniae
13 Purussaurus An alligator is a crocodilian in the genus Alligator of the family Alligatoridae. The two living species are the American alligator and the Chinese alligator. Additionally, several extinct species of alligator are known from fossil remains. Alligators have long existed since the Oligocene epoch 37 million more.
14 Deinosuchus Deinosuchus is an extinct genus related to the alligator that lived 80 to 73 million years ago, during the late Cretaceous period.
15 Livyatan
16 Smilodon Smilodon was a saber-toothed cat from North and South America that lived 1.5 million to 10,000 years ago. It had a short tail, but very strong legs and paws for catching big prey. It was also 7.2 feet (2.2 meters) from nose to tail. more.
17 Arthropleura
18 Inostrancevia
19 Hatzegopteryx Hatzegopteryx is a genus of azhdarchid pterosaur found in the late Maastrichtian deposits of the DensuČ™ Ciula Formation, an outcropping in Transylvania, Romania.
20 Koolasuchus
21 Postosuchus
22 Barinasuchus
23 Razanandrongobe
24 Megalania
25 Amphicyon
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