Think dinosaurs were scary? No way! At one time, evolution produced monsters so terrifying that dinosaurs look like fluff balls next to them! Want to know what creatures could have destroyed the world if they were alive? Let's go! Timestamps: Liopleurodon 1:04 Arthropleura 2:15 Megalania 3:23 Dunkleosteus 4:47 Jaeckelopterus 6:03 Sarcosuchus 7:03 Gorgonops 8:24 Titanoboa 9:40 Meganeuropsis 11:07 Helicoprion 12:28 Music: https://www.youtube.com/audiolibrary/... Overview: Liopleurodon was a giant marine reptile in the short-necked plesiosaur family. This species lived during the Callovian age of the Middle Jurassic period. Typical sizes of Liopleurodon varied from 4.8 to 7 m, but the largest individuals reached 10 m and more. Arthropleura lived in what is now northeastern North America and Scotland about 315 million years ago. Within the species, sizes varied from 30 cm to 2 m, and in width they reached 70 cm. The body of Arthropleura consisted of about 30 jointed segments, covered with two lateral plates and one central plate. Megalania was the largest monitor lizard imaginable. The age of the earliest fossils is 50 thousand years. In length, the largest Megalania reached 7 m with a maximum body weight of 600-620 kg. They were incredibly active hunters. Dunkleosteus became extinct about 358-382 million years ago in the late Devonian period. There were as many as 10 species, including D. terrelli, D. denisonii, and D. magnificus. D. terrelli, the largest, grew to 6 m (20 ft) in length. Most Dunkleosteus fossils are found in North America, Poland, Belgium, and Morocco. Jaeckelopterus was a giant, predatory sea scorpion. Scientists have confirmed that this arthropod grew to almost 2.5 m (8 ft) in length, making it the absolute champion of its kind. Sarcosuchus, a distant relative of modern crocodiles, lived about 112 million years ago. It had slightly telescopic eyes and a long snout, as well as 35 teeth on each side of the upper jaw and 31 teeth on each side of the lower jaw. Gorgonopsians lived about 260 million years ago, terrifying all the smaller species of their time. These creatures grew to 3 m (10 ft) long and weighed about 450 kg (1,000 lb). In fact, they were at the top of the food chain. Titanoboa lived in what is now northeastern Colombia, and its fossils date back 58 to 60 million years. It set a terrifying record for being the largest known snake, reaching nearly 14.5 m (45 ft) in length and weighing around 1,200 kg (2,600 lb). Meganeuropsis remains the largest insect in history, with a wing length of 33 cm (13 in) and a body length of 43 cm (17 in). The first Meganeuropsis fossils were found in France in 1880. Helicoprion lived approximately 290 million years ago in the waters of North America, Eastern Europe, Asia, and Australia. Helicoprion’s most distinctive feature was its circular jaw. Helicoprions were incredibly strong, as they survived the Permian-Triassic extinction event, which wiped out 90% of marine species and about 70% of land species. Subscribe to AdMe: http://goo.gl/DgUonf ---------------------------------------------------------------------------------------- We are on social networks: 5-Minute Crafts on Youtube: https://www.goo.gl/8JVmuC ---------------------------------------------------------------------------------------- More cool articles and videos on http://adme.ru/