Its name comes from the Greek and means two-crested lizard, lived in part Triassic and Jurassic about 200 million years ago. It is believed to be a primitive species of theceratosaurus. The Dilophosaurus was approximately 2.5 meters tall and 7 meters long, making it a large dinosaur, and could weigh up to 400 kg. One of its main characteristics is that it had a narrow head and weak jaws, now that if we want to highlight something was that it had two parallel ridges, which were different in females and males.

During the time we have known the Dilophosaurus, the experts are convinced that it is a theropod, however they have designated at least 9 groups of theropods that are known, without any of them fitting perfectly. It is believed to have been one of the first known tripods. It is thought that he walked on two legs because of his characteristic anatomy and short arms, the length of his arms being the main reason why it is believed that he could not walk on four legs. In some findings more than one Dilophosaurus were found so it is believed that they lived in groups.

The first bones were found in 1942 in Arizona, although at first they thought it might be a Megalosaurus. It was in 1954 when it was partially described, but it was not given a definite name. It was not until 10 years later that a skull was found, that they realized that it was a completely different genus of dinosaur, considering it one of the oldest and best preserved Jurassic theropods. Afterwards, the first remains were found in order to classify and study the fossil in greater depth. It was then that they discovered another much more complete specimen from which they could extract much more information.

The Dilophosaurus had long teeth but a small mouth, they had a small indentation in the back of each tooth so you can compare their teeth to those of a crocodile. These teeth were thought to be unable to hold a large prey, so at first most experts thought it might be a scavenger, that is, it ate dead animals or the remains of other people’s prey. However, it has been found that the muscles of her jaws were very powerful, and that beyond her teeth was the strength of her bite made her a very effective predator. It will most likely feed on very small herbivorous dinosaurs such as Scutellosaurus.

Without a doubt what makes Dilophosaurus different from the others, are the ridges in its skull, which were not horns but a kind of parallel crown that was found in the upper part of its skull, these ridges made it particular even though its specific function is not yet known. Both Dodson and Robert Gay did in-depth studies of these structures, finding little information on their use beyond the fact that they differentiated the sexes and were most likely used by males to capture the attention of females.

When the first remains were discovered the skull had no ridges because they were very fragile and would have been broken in the process of fossilization, however, as the better preserved skulls were found the ridges that came out above his eyes in a V-shape and were separated by a small space. Although they were made of bone, they were very thin, so it is believed that they could not have played an important role beyond characterization between the sexes.

This is a dinosaur well known for its ridges and for this reason has been portrayed in a series of films although a little modified, for example in Jurassic Park could spit poison, in addition to being presented much smaller than it was. In this way it was included in all the products and video games derived from this film and also for other video games such as Jurassic War on which they totally base their Dilophosaurus on Steven Spilberg’s film.