Allosaurus

Allosaurus is a genus of predatory dinosaurs from the Allosaurid family of the theropod suborder. They lived in the Jurassic period about 155-145 million years ago. Allosaurs were predators, moving on powerful hind legs, while the forelimbs were relatively small. Fossils of allosaurs have been found in North America, Southern Europe and East Africa.

The first fossils were studied in 1877 by Othniel Charles Marsh. Along with Tyrannosaurus, Allosaurus is the most popular predatory dinosaur. He appeared in many feature films, for example, "The Lost World" of 1925, as well as in "Jurassic World 2". The allosaurs were most vividly and plausibly presented in the BBC series "Walking with Dinosaurs" and the film "The Ballad of the Big Al".

Allosaurus was a large bipedal predator with a large skull equipped with dozens of large sharp teeth. Representatives of the type species, Allosaurus fragilis, reached an average of 8.5 meters in length, 3.5 meters in height and weighed more than 1.5 tons, although based on fragmentary remains of a larger size, it can be assumed that large individuals could reach 11 meters in length and weigh more than 4 tons. Allosaurus moved on large and powerful hind legs, while its forelimbs were relatively small, they had three large curved claws. The massive skull was balanced by a long, heavy tail.