10 Terrifying Prehistoric Sea Monsters

Some of the world's largest creatures ever lived millions of years ago. Here are ten of the largest, most fearsome sea monster that ever paced in the ocean:

10.  Shastasaurus 

 
Shastasaurus are marine predators that look like modern dolphins, and can reach a large size during the Triassic period more than 200 million years ago.
Shastasaurus, the largest marine reptile species ever found, Shastasaurus is a variety that can grow more than 65 feet (20m), much longer than most other predators. But one of the biggest creatures ever to swim the ocean was not really scary predators, food Primarily fish jenis2

9.  Dakosaurus 

 
Dakosaurus first discovered in Germany and, with the odd fish reptiles body, is one of the top predators in the ocean for the rest of the Jurassic period.
Fossils have been found throughout a very wide distribution, lit everywhere from the UK to Russia to Argentina. Although commonly compared to modern crocs, Dakosaurus can reach lengths of 16 feet (5m). Unique tooth has led scientists to consider it as a top predator during the reign of terror.

8.  Thalassomedon 

 
Thalassomedon pliosaur species whose name is translated from the Greek for "sea god" - and for the right reasons. They are large predators, reaching a length of up to 40 feet (12m). Its fins almost 7 feet (2m) long, which allows for swimming depth with deadly efficiency.
Reigned as top predator lasted through the end of the Cretaceous period, finally coming to an end when the new sea view larger predators such as mosasaur

7.  Nothosaurus 

 
Nothosaurus, only about 13 feet (4m) long, are aggressive hunters. They are fully equipped with sharp teeth, outer-pointing teeth.
Nothosaurus thought to have been primarily ambush predators, using reptiles slim figure and sneak up on prey brought by kejutan.ini believes that Nothosaurus associated with pliosaurs, other varieties of predators in the sea. Fossil evidence shows that they lived during the Triassic period more than 200 million years ago.

6.  Tylosaurus 

Tylosaurus was a sea lizard, not including the dinosaurs. Dominant predators in the sea of his era, Tylosaurus has long slender body with a top surface and a dark-colored lower side lighter, which disguise its presence in the water. This animal flicked its tail to the right and left and the other side when swimming, determine the direction of the goal in the Cretaceous sea gloomy using the four fins resembling limbs ang. Tylosaurus has a length of 1.75 m skull with jaws full of sharp teeth berbentukkerucut, which can easily tear the body of its prey. The animals usually eat shellfish, plangton and other small animals but she also likes to eat meat. The animals there are only a few in the Cretaceous era

5.  Thalattoarchon Saurophagis 

Thalattoarchon Saurophagis A newly discovered, T. saurophagis is the size of a school bus, reaching nearly 30 feet (9m) long. This is the initial species of ichthyosaur that lived during the Triassic period, 244 million years ago. Because they live on long after the Permian extinction (the biggest mass extinction Earth, when 95% of marine life estimated to have been destroyed), discovery is giving scientists new insights into the rapid recovery of the ecosystem.

 4.  Tanystropheus 

 

Tanystropheus are reptiles that can reach 20 feet (6 meters) long, and is thought to have lived during the Triassic period nearly 215 million years ago.

3.  Liopleurodon
 

Liopleurodon included in the family Pliosaur (marine reptiles from the Jurassic and Cretaceous Periods). Liopleurodon is also a carnivorous marine reptiles have a very large size, with a body length of 1.5 to 10 meters.
This giant has four legs, resembling paddles great and powerful, making it a good swimmer with incredible speed.
Liopleurodon regarded as the ruler of the sea at the time of the Jurassic and early Cretaceous as including the largest predators of its time.
Spoiler for size:

2.  Mosasaurus
 

If large Liopleurodon, compared Mosasaurus is colossal.Fossil evidence suggests that Mosasaurus could reach as much as 50 feet (15m) long, making it one of the largest marine predators of the Cretaceous period. Mosasaurus head is like that of a crocodile, lined with hundreds of razor sharp teeth that can kill the enemy even the most well-armored.
Spoiler for size:

1.  Megalodon 

Prehistoric shark type and the oldest in the sea, which reaches half-meter jaws and teeth barred like a chainsaw with 2 rows of teeth on the top and bottom. Cut pieces of whale meat along the 1.75 m. Smilodon swim in all the oceans and the highest in the European region. Megalodon which led to the extinction of several types of small carnivores in the sea.