10 Most TERRIFYING Prehistoric Sea Creatures!

Follow us on instagram!   / katrinaexplained   Subscribe For New Videos! http://goo.gl/UIzLeB Check out these videos you might like: Unbelievable Animals SAVING Other Animals! 🐯   • Unbelievable Animals SAVING Other Animals!   LARGEST Animals Ever Discovered! 🐙   • LARGEST Animals Ever Discovered!   Wild Animals That SAVED Human Lives! 🐻   • Wild Animals That SAVED Human Lives!   10. Tylosaurus It doesn’t get bigger than the Tylosaurus when talking about gigantic prehistoric creatures. Weighing in at seven tons and stretching to a whopping 45-feet long (14 meters), the long, sleek predator was one of the largest and most vicious marine reptiles to lurk through the Late Cretaceous period. 9. Liopleurodon A marine reptile from the Mesozoic era, Liopleurodon's name means “smooth sided teeth”. It was discovered from just 3 teeth found in a town in France in the 19th century. It is a type of marine reptile that is characterized by its elongated head, short neck and long flippers attached to a thick torso. 8. Thalattoarchon Saurophagis The Thalattoarchon was known not only for their size but their ferocity. With a name that means “lizard-eating sovereign of the sea”, the marine reptile lived at the same time as the dinosaurs, and are even believed to have lived for 160 million years. With remains uncovered under rocks that dated back 244 million years, Thalattoarchon had teeth measuring 5 inches long! 7. Tanystropheus Sure, the Tanystropheus is yet another marine reptile, but one look at the long, narrow neck of this archosaur and you’ll know right away that we’re dealing with a very different prehistoric sea creature. Stretching 10 feet, the length of its neck was said to be supported by only about a dozen extremely elongated vertebrae. In fact, it was as long as the rest of its trunk and tail combined. So, it also makes sense that its name is Greek for “long-necked one”. 6. Thalassomedon One of the largest of the early Plesiosaurs, which were marine reptiles characterized by their long, narrow necks, small heads, and streamlined torsos, the Thalassomedon was uncovered in Colorado in 1939. Originally swimming in the Western Interior Seaway, which was an inland sea that divided North America in two during the Cretaceous period, the massive creature is believed to have dined on fish and squid. 5. Kronosaurus Known as one of the largest and deadliest marine reptiles to have ever lived, the Kronosaurus was a fascinating reptile named after the Greek mythological figure Kronos, the father of Zeus. The first fossil of a Kronosaurus was found in northeastern Australia in 1899. Three quarters of a century later, another specimen was found in Colombia, which is well-known for other discoveries of prehistoric snakes, crocodiles and turtles. So far, only two identified species of Kronosaurus have been found. 4. Dunkleosteus With all this talk of big, fearsome creatures, some argue that the Dunkelosteus could possibly beat them all! Long before the age of the dinosaurs, and even before gigantic sharks roamed the seas, there was the Dunkleosteus. A fish with thick, bony plates that covered their skulls, this creature lived around 360 million years ago and measured up to 6 meters long. 3. Shastasaurus When new specimens of a 27-foot marine reptile known as Shastasaurus were found in China, paleontologists were pretty excited. Shastasaurus was a type of Ichthyosaur but was different from all the rest. While most of the time ichthyosaurs have a long snout filled with small, conical teeth, these actually had a shortened mouth with no teeth. 2. Mauisaurus Another marine reptile that was discovered in 1874, the Mauisaurus existed in marine environments some 85.8 million years ago. The carnivore, whose name means Maui lizard, was discovered in New Zealand. Scientists continue to speculate about the size of the Mauisaurus due to fossils that were attributed to the species that came from so many different locations. 1. Eurypterid As if scorpions aren't bad enough, imagine living in a time when a human-sized sea scorpion lurked just below the surface of the water. Known as Eurypterids, these creatures were around some 460 million years ago in what is now Iowa. A type of arthropod that is related to modern arachnids and horseshoe crabs, these ancient sea scorpions are the oldest eurypterid fossils on record by 9 million years. #prehistoric #creatures #originsexplained #katrina