History than the dinosaurs more terrible creatures (two), see more easy to do nightmares

Pachycephalosaurus

Pachycephalosaurus belongs to the order Serpentinosaurus, the short-necked epimastigotes suborder, although Serpentinosaurus and dinosaurs are two different animals.

Since they went extinct at the same time, many people think they are the same species, but in fact they are not.

The next animal to be introduced is one that you will want to avoid anyway. Paddletoothosaurus is one of the most powerful aquatic predators that ever lived, a fierce hunter, Paddletoothosaurus derives its name from the Greek word meaning smooth teeth, this beast weighs as much as your car and is at least half the length of a bowling alley, their long thin jaws and extremely smooth teeth make it almost impossible for bitten prey to break free.

Some large fish, such as crocodiles, Leeds fish, ichthyosaurs, etc., they can become the prey of pliosaurs, but pliosaurs are good at hunting does not rely solely on the advantage of teeth, the keen sense of smell in the water provides a lot of help as well.

This is because the nasal structure of Pliosaurus allowed it to smell in the water, so that it could detect the whereabouts of prey at a great distance.

Have you ever strayed into a swamp? Do you worry about the sudden appearance of an alligator nearby when you are deep in the mud?

When I'm in a muddy place, such thoughts come to my mind and I'm sure I don't want to encounter these animals, there was an animal very similar to it in prehistoric times and more threatening than the crocodiles we know today.

The crocodile is a 12-meter-long, 10-ton crocodile-like reptile that existed in Africa 135 to 112 million years ago during the Cretaceous period and was one of the largest and most inhospitable animals to have ever survived.

If this predator, which moves freely between land and water, wants to eat you, you'll have to fend for yourself.

Its skull was 1.8 meters long, with 132 thick teeth and conical teeth suitable for grasping or clamping down on prey.

Some experts speculate that their main prey may have been large animals with smaller dinosaurs, but more experts believe that the emperor crocodile was just a large fish-eating animal.

Feeding on large fish and turtles from the Cretaceous period, the fact that it could actually swallow a beast like a dinosaur is still a bit disturbing to think about.

If you've seen Jurassic World, then you're probably familiar with the Cangosaurus, which would have jumped out of the water and eaten a great white shark like an orca, however the Cangosaurus was not a dinosaur and had nothing to do with dinosaurs, they were reptiles and were more closely related to snakes and giant crabs.

Take a closer look at the Jurassic World poster, you will see a paleosaur mouth with two more rows of teeth.

A paleontologist once pointed out that the teeth of the Cangosaurus should be embedded in the fleshy tissue of the gums, and not as obvious as depicted in the movie. Was it designed by some concept designers in Hollywood to make eating look more scary?

Actually, no. Grasping food underwater was a challenge for most paleosaurs, and fortunately like snakes today, they had a sharp secret weapon.

Some dental experts speculate that the Cangosaurus would have used their sharp teeth to tear their prey apart before swallowing them. Cangosaurus were the toughest marine predators in that era, and they drove their competition to extinction over a period of 100,000 years, so they eventually became the dominant force in the ancient oceans.

When it comes to lizard-eating sea ichthyosaurs, one thing has to be mentioned. This species was just discovered in 2010 and was officially described in 2013, and the new species was officially named lizard-eating sea ichthyosaur, meaning a marine emperor that feeds on lizards.

Estimated to have a total length of at least 8.5 meters, the interned Haitian ichthyosaur had a huge skull and jaws with sharp teeth used to catch and break down prey.

Researchers say it may have been able to hunt animals similar to or larger than itself in size, an ecological role comparable to that of modern killer whales.

In the Permian species extinction event, nearly 80 to 96 percent of marine species disappeared and went extinct.

But the newly discovered carnivores at this time lived 244 million years ago, 8 million years after the Permian to Triassic extinction event, thus showing that the marine ecosystem recovered rapidly after the mass extinction.